diff --git a/composer.json b/composer.json
index b0cfd52..d533e50 100644
--- a/composer.json
+++ b/composer.json
@@ -92,5 +92,10 @@
       "xgettext --omit-header -j -o i18n/template.pot classes/* controllers/*"
     ],
     "youtube-dl": "vendor/rg3/youtube-dl/youtube_dl/__main__.py"
+  },
+  "config": {
+    "platform": {
+      "php": "7.0.33"
+    }
   }
 }
diff --git a/composer.lock b/composer.lock
index 1e7da22..8a044c1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f3bddc2f05cda62b6b39205b028293fd",
+    "content-hash": "62241b9b42bfa3b460f97329182303b5",
     "packages": [
         {
             "name": "aura/session",
@@ -1598,28 +1598,25 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.9.1",
+            "version": "1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72"
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72",
-                "reference": "e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1"
-            },
-            "replace": {
-                "myclabs/deep-copy": "self.version"
+                "php": "^5.6 || ^7.0"
             },
             "require-dev": {
                 "doctrine/collections": "^1.0",
                 "doctrine/common": "^2.6",
-                "phpunit/phpunit": "^7.1"
+                "phpunit/phpunit": "^4.1"
             },
             "type": "library",
             "autoload": {
@@ -1642,40 +1639,43 @@
                 "object",
                 "object graph"
             ],
-            "time": "2019-04-07T13:18:21+00:00"
+            "time": "2017-10-19T19:58:43+00:00"
         },
         {
             "name": "nette/bootstrap",
-            "version": "v3.0.0",
+            "version": "v2.4.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/bootstrap.git",
-                "reference": "e1075af05c211915e03e0c86542f3ba5433df4a3"
+                "reference": "268816e3f1bb7426c3a4ceec2bd38a036b532543"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/bootstrap/zipball/e1075af05c211915e03e0c86542f3ba5433df4a3",
-                "reference": "e1075af05c211915e03e0c86542f3ba5433df4a3",
+                "url": "https://api.github.com/repos/nette/bootstrap/zipball/268816e3f1bb7426c3a4ceec2bd38a036b532543",
+                "reference": "268816e3f1bb7426c3a4ceec2bd38a036b532543",
                 "shasum": ""
             },
             "require": {
-                "nette/di": "^3.0",
-                "nette/utils": "^3.0",
-                "php": ">=7.1"
+                "nette/di": "~2.4.7",
+                "nette/utils": "~2.4",
+                "php": ">=5.6.0"
+            },
+            "conflict": {
+                "nette/nette": "<2.2"
             },
             "require-dev": {
-                "latte/latte": "^2.2",
-                "nette/application": "^3.0",
-                "nette/caching": "^3.0",
-                "nette/database": "^3.0",
-                "nette/forms": "^3.0",
-                "nette/http": "^3.0",
-                "nette/mail": "^3.0",
-                "nette/robot-loader": "^3.0",
-                "nette/safe-stream": "^2.2",
-                "nette/security": "^3.0",
-                "nette/tester": "^2.0",
-                "tracy/tracy": "^2.6"
+                "latte/latte": "~2.2",
+                "nette/application": "~2.3",
+                "nette/caching": "~2.3",
+                "nette/database": "~2.3",
+                "nette/forms": "~2.3",
+                "nette/http": "~2.4.0",
+                "nette/mail": "~2.3",
+                "nette/robot-loader": "^2.4.2 || ^3.0",
+                "nette/safe-stream": "~2.2",
+                "nette/security": "~2.3",
+                "nette/tester": "~2.0",
+                "tracy/tracy": "^2.4.1"
             },
             "suggest": {
                 "nette/robot-loader": "to use Configurator::createRobotLoader()",
@@ -1684,7 +1684,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "2.4-dev"
                 }
             },
             "autoload": {
@@ -1708,57 +1708,53 @@
                     "homepage": "https://nette.org/contributors"
                 }
             ],
-            "description": "🅱 Nette Bootstrap: the simple way to configure and bootstrap your Nette application.",
+            "description": "? Nette Bootstrap: the simple way to configure and bootstrap your Nette application.",
             "homepage": "https://nette.org",
             "keywords": [
                 "bootstrapping",
                 "configurator",
                 "nette"
             ],
-            "time": "2019-03-26T12:59:07+00:00"
+            "time": "2018-05-17T12:52:20+00:00"
         },
         {
             "name": "nette/di",
-            "version": "v3.0.0",
+            "version": "v2.4.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/di.git",
-                "reference": "19d83539245aaacb59470828919182411061841f"
+                "reference": "d0561b8f77e8ef2ed6d83328860e16c81a5a8649"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/di/zipball/19d83539245aaacb59470828919182411061841f",
-                "reference": "19d83539245aaacb59470828919182411061841f",
+                "url": "https://api.github.com/repos/nette/di/zipball/d0561b8f77e8ef2ed6d83328860e16c81a5a8649",
+                "reference": "d0561b8f77e8ef2ed6d83328860e16c81a5a8649",
                 "shasum": ""
             },
             "require": {
                 "ext-tokenizer": "*",
-                "nette/neon": "^3.0",
-                "nette/php-generator": "^3.2.2",
-                "nette/robot-loader": "^3.2",
-                "nette/schema": "^1.0",
-                "nette/utils": "^3.0",
-                "php": ">=7.1"
+                "nette/neon": "^2.3.3 || ~3.0.0",
+                "nette/php-generator": "^2.6.1 || ^3.0.0",
+                "nette/utils": "^2.5.0 || ~3.0.0",
+                "php": ">=5.6.0"
             },
             "conflict": {
-                "nette/bootstrap": "<3.0"
+                "nette/bootstrap": "<2.4",
+                "nette/nette": "<2.2"
             },
             "require-dev": {
-                "nette/tester": "^2.2",
+                "nette/tester": "^2.0",
                 "tracy/tracy": "^2.3"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "2.4-dev"
                 }
             },
             "autoload": {
                 "classmap": [
                     "src/"
-                ],
-                "files": [
-                    "src/compatibility.php"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -1777,7 +1773,7 @@
                     "homepage": "https://nette.org/contributors"
                 }
             ],
-            "description": "💎 Nette Dependency Injection Container: Flexible, compiled and full-featured DIC with perfectly usable autowiring and support for all new PHP 7.1 features.",
+            "description": "? Nette Dependency Injection Container: Flexible, compiled and full-featured DIC with perfectly usable autowiring and support for all new PHP 7.1 features.",
             "homepage": "https://nette.org",
             "keywords": [
                 "compiled",
@@ -1788,37 +1784,37 @@
                 "nette",
                 "static"
             ],
-            "time": "2019-04-03T19:35:46+00:00"
+            "time": "2019-01-30T13:26:05+00:00"
         },
         {
             "name": "nette/finder",
-            "version": "v2.5.0",
+            "version": "v2.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/finder.git",
-                "reference": "6be1b83ea68ac558aff189d640abe242e0306fe2"
+                "reference": "ee951a656cb8ac622e5dd33474a01fd2470505a0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/finder/zipball/6be1b83ea68ac558aff189d640abe242e0306fe2",
-                "reference": "6be1b83ea68ac558aff189d640abe242e0306fe2",
+                "url": "https://api.github.com/repos/nette/finder/zipball/ee951a656cb8ac622e5dd33474a01fd2470505a0",
+                "reference": "ee951a656cb8ac622e5dd33474a01fd2470505a0",
                 "shasum": ""
             },
             "require": {
-                "nette/utils": "^2.4 || ~3.0.0",
-                "php": ">=7.1"
+                "nette/utils": "~2.4",
+                "php": ">=5.6.0"
             },
             "conflict": {
                 "nette/nette": "<2.2"
             },
             "require-dev": {
-                "nette/tester": "^2.0",
+                "nette/tester": "~2.0",
                 "tracy/tracy": "^2.3"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.5-dev"
+                    "dev-master": "2.4-dev"
                 }
             },
             "autoload": {
@@ -1850,7 +1846,7 @@
                 "iterator",
                 "nette"
             ],
-            "time": "2019-02-28T18:13:25+00:00"
+            "time": "2018-06-28T11:49:23+00:00"
         },
         {
             "name": "nette/neon",
@@ -1915,21 +1911,24 @@
         },
         {
             "name": "nette/php-generator",
-            "version": "v3.2.2",
+            "version": "v3.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/php-generator.git",
-                "reference": "acff8b136fad84b860a626d133e791f95781f9f5"
+                "reference": "ea90209c2e8a7cd087b2742ca553c047a8df5eff"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/php-generator/zipball/acff8b136fad84b860a626d133e791f95781f9f5",
-                "reference": "acff8b136fad84b860a626d133e791f95781f9f5",
+                "url": "https://api.github.com/repos/nette/php-generator/zipball/ea90209c2e8a7cd087b2742ca553c047a8df5eff",
+                "reference": "ea90209c2e8a7cd087b2742ca553c047a8df5eff",
                 "shasum": ""
             },
             "require": {
                 "nette/utils": "^2.4.2 || ~3.0.0",
-                "php": ">=7.1"
+                "php": ">=7.0"
+            },
+            "conflict": {
+                "nette/nette": "<2.2"
             },
             "require-dev": {
                 "nette/tester": "^2.0",
@@ -1938,7 +1937,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.2-dev"
+                    "dev-master": "3.0-dev"
                 }
             },
             "autoload": {
@@ -1962,7 +1961,7 @@
                     "homepage": "https://nette.org/contributors"
                 }
             ],
-            "description": "🐘 Nette PHP Generator: generates neat PHP code for you. Supports new PHP 7.3 features.",
+            "description": "? Nette PHP Generator: generates neat PHP code for you. Supports new PHP 7.2 features.",
             "homepage": "https://nette.org",
             "keywords": [
                 "code",
@@ -1970,27 +1969,30 @@
                 "php",
                 "scaffolding"
             ],
-            "time": "2019-03-15T03:41:13+00:00"
+            "time": "2018-08-09T14:32:27+00:00"
         },
         {
             "name": "nette/robot-loader",
-            "version": "v3.2.0",
+            "version": "v3.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/robot-loader.git",
-                "reference": "0712a0e39ae7956d6a94c0ab6ad41aa842544b5c"
+                "reference": "3e8d75d6d976e191bdf46752ca40a286671219d2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/robot-loader/zipball/0712a0e39ae7956d6a94c0ab6ad41aa842544b5c",
-                "reference": "0712a0e39ae7956d6a94c0ab6ad41aa842544b5c",
+                "url": "https://api.github.com/repos/nette/robot-loader/zipball/3e8d75d6d976e191bdf46752ca40a286671219d2",
+                "reference": "3e8d75d6d976e191bdf46752ca40a286671219d2",
                 "shasum": ""
             },
             "require": {
                 "ext-tokenizer": "*",
-                "nette/finder": "^2.5",
-                "nette/utils": "^3.0",
-                "php": ">=7.1"
+                "nette/finder": "^2.3 || ^3.0",
+                "nette/utils": "^2.4 || ^3.0",
+                "php": ">=5.6.0"
+            },
+            "conflict": {
+                "nette/nette": "<2.2"
             },
             "require-dev": {
                 "nette/tester": "^2.0",
@@ -1999,7 +2001,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.2-dev"
+                    "dev-master": "3.1-dev"
                 }
             },
             "autoload": {
@@ -2032,81 +2034,27 @@
                 "nette",
                 "trait"
             ],
-            "time": "2019-03-08T21:57:24+00:00"
-        },
-        {
-            "name": "nette/schema",
-            "version": "v1.0.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/nette/schema.git",
-                "reference": "6241d8d4da39e825dd6cb5bfbe4242912f4d7e4d"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/nette/schema/zipball/6241d8d4da39e825dd6cb5bfbe4242912f4d7e4d",
-                "reference": "6241d8d4da39e825dd6cb5bfbe4242912f4d7e4d",
-                "shasum": ""
-            },
-            "require": {
-                "nette/utils": "^3.0.1",
-                "php": ">=7.1"
-            },
-            "require-dev": {
-                "nette/tester": "^2.2",
-                "tracy/tracy": "^2.3"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause",
-                "GPL-2.0",
-                "GPL-3.0"
-            ],
-            "authors": [
-                {
-                    "name": "David Grudl",
-                    "homepage": "https://davidgrudl.com"
-                },
-                {
-                    "name": "Nette Community",
-                    "homepage": "https://nette.org/contributors"
-                }
-            ],
-            "description": "📐 Nette Schema: validating data structures against a given Schema.",
-            "homepage": "https://nette.org",
-            "keywords": [
-                "config",
-                "nette"
-            ],
-            "time": "2019-04-03T15:53:25+00:00"
+            "time": "2019-03-01T20:23:02+00:00"
         },
         {
             "name": "nette/utils",
-            "version": "v3.0.1",
+            "version": "v2.5.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/utils.git",
-                "reference": "bd961f49b211997202bda1d0fbc410905be370d4"
+                "reference": "17b9f76f2abd0c943adfb556e56f2165460b15ce"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/utils/zipball/bd961f49b211997202bda1d0fbc410905be370d4",
-                "reference": "bd961f49b211997202bda1d0fbc410905be370d4",
+                "url": "https://api.github.com/repos/nette/utils/zipball/17b9f76f2abd0c943adfb556e56f2165460b15ce",
+                "reference": "17b9f76f2abd0c943adfb556e56f2165460b15ce",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.1"
+                "php": ">=5.6.0"
+            },
+            "conflict": {
+                "nette/nette": "<2.2"
             },
             "require-dev": {
                 "nette/tester": "~2.0",
@@ -2115,7 +2063,7 @@
             "suggest": {
                 "ext-gd": "to use Image",
                 "ext-iconv": "to use Strings::webalize() and toAscii()",
-                "ext-intl": "to use Strings::webalize(), toAscii(), normalize() and compare()",
+                "ext-intl": "for script transliteration in Strings::webalize() and toAscii()",
                 "ext-json": "to use Nette\\Utils\\Json",
                 "ext-mbstring": "to use Strings::lower() etc...",
                 "ext-xml": "to use Strings::length() etc. when mbstring is not available"
@@ -2123,12 +2071,15 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "2.5-dev"
                 }
             },
             "autoload": {
                 "classmap": [
                     "src/"
+                ],
+                "files": [
+                    "src/loader.php"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -2147,7 +2098,7 @@
                     "homepage": "https://nette.org/contributors"
                 }
             ],
-            "description": "🛠 Nette Utils: lightweight utilities for string & array manipulation, image handling, safe JSON encoding/decoding, validation, slug or strong password generating etc.",
+            "description": "? Nette Utils: lightweight utilities for string & array manipulation, image handling, safe JSON encoding/decoding, validation, slug or strong password generating etc.",
             "homepage": "https://nette.org",
             "keywords": [
                 "array",
@@ -2165,7 +2116,7 @@
                 "utility",
                 "validation"
             ],
-            "time": "2019-03-22T01:00:30+00:00"
+            "time": "2018-09-18T10:22:16+00:00"
         },
         {
             "name": "nikic/php-parser",
@@ -2220,28 +2171,27 @@
         },
         {
             "name": "ocramius/package-versions",
-            "version": "1.4.0",
+            "version": "1.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Ocramius/PackageVersions.git",
-                "reference": "a4d4b60d0e60da2487bd21a2c6ac089f85570dbb"
+                "reference": "ad8a245decad4897cc6b432743913dad0d69753c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Ocramius/PackageVersions/zipball/a4d4b60d0e60da2487bd21a2c6ac089f85570dbb",
-                "reference": "a4d4b60d0e60da2487bd21a2c6ac089f85570dbb",
+                "url": "https://api.github.com/repos/Ocramius/PackageVersions/zipball/ad8a245decad4897cc6b432743913dad0d69753c",
+                "reference": "ad8a245decad4897cc6b432743913dad0d69753c",
                 "shasum": ""
             },
             "require": {
-                "composer-plugin-api": "^1.0.0",
-                "php": "^7.1.0"
+                "composer-plugin-api": "^1.0",
+                "php": "~7.0"
             },
             "require-dev": {
-                "composer/composer": "^1.6.3",
-                "doctrine/coding-standard": "^5.0.1",
+                "composer/composer": "^1.3",
                 "ext-zip": "*",
-                "infection/infection": "^0.7.1",
-                "phpunit/phpunit": "^7.0.0"
+                "humbug/humbug": "dev-master",
+                "phpunit/phpunit": "^6.4"
             },
             "type": "composer-plugin",
             "extra": {
@@ -2266,7 +2216,7 @@
                 }
             ],
             "description": "Composer plugin that provides efficient querying for installed package versions (no runtime IO)",
-            "time": "2019-02-21T12:16:21+00:00"
+            "time": "2017-11-24T11:07:03+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -3045,6 +2995,53 @@
             "abandoned": true,
             "time": "2018-08-09T05:50:03+00:00"
         },
+        {
+            "name": "psr/log",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "6c001f1daafa3a3ac1d8ff69ee4db8e799a654dd"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/6c001f1daafa3a3ac1d8ff69ee4db8e799a654dd",
+                "reference": "6c001f1daafa3a3ac1d8ff69ee4db8e799a654dd",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
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@@ -3668,27 +3665,25 @@
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@@ -3696,12 +3691,11 @@
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@@ -3712,7 +3706,7 @@
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@@ -3739,29 +3733,85 @@
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+                "php": "^5.5.9|>=7.0.8",
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+                    "dev-master": "3.4-dev"
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+            "authors": [
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+                    "homepage": "https://symfony.com/contributors"
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+            "description": "Symfony Debug Component",
+            "homepage": "https://symfony.com",
+            "time": "2019-05-18T13:32:47+00:00"
+        },
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@@ -3788,7 +3838,7 @@
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@@ -3849,122 +3899,6 @@
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@@ -4132,5 +4066,8 @@
     "prefer-stable": false,
     "prefer-lowest": false,
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 }