Update travis (#250)

Bring the travis.yml up to date with https://github.com/blackboard-open-source/moodle-plugin-ci/blob/master/.travis.dist.yml
use grunt to validate js and css
add validation of mustache, savepoints, allow javascript behat tests

.travis.yml

@@ -1,30 +1,39 @@
 language: php
 
-sudo: false
+# For javascript behat tests we need sudo
+sudo: true
 
 cache:
   directories:
     - $HOME/.composer/cache
+    - $HOME/.npm
 
 php:
  - 7.0
  - 7.2
 
 addons:
+ firefox: 47.0.1
  postgresql: 9.3
+ apt:
+   packages:
+   - oracle-java8-installer
+   - oracle-java8-set-default
 
 env:
  global:
   - MOODLE_BRANCH=MOODLE_34_STABLE
+  - IGNORE_NAMES=mobile_*.mustache # Mobile mustache has specific syntax, ignore their templates
  matrix:
   - DB=pgsql
   - DB=mysqli
 
 before_install:
   - phpenv config-rm xdebug.ini
+  - nvm install 8.9
+  - nvm use 8.9
   - cd ../..
-  - composer selfupdate
-  - composer create-project -n --no-dev --prefer-dist moodlerooms/moodle-plugin-ci ci ^1
+  - composer create-project -n --no-dev --prefer-dist moodlerooms/moodle-plugin-ci ci ^2
   - export PATH="$(cd ci/bin; pwd):$(cd ci/vendor/bin; pwd):$PATH"
 
 install:
@@ -32,11 +41,12 @@ install:
 
 script:
   - moodle-plugin-ci phplint
+  # - moodle-plugin-ci phpcpd # subplugins often have similar code and cause "duplicated code" errors
+  # - moodle-plugin-ci phpmd # too much noise from this check, maybe, some day...
   - moodle-plugin-ci codechecker
-  - moodle-plugin-ci csslint
-  - moodle-plugin-ci shifter
-  - moodle-plugin-ci jshint
   - moodle-plugin-ci validate
+  - moodle-plugin-ci savepoints
+  - moodle-plugin-ci mustache
+  - moodle-plugin-ci grunt -t stylelint:css -t js
   - moodle-plugin-ci phpunit
   - moodle-plugin-ci behat
-

verify_certificate.php

@@ -22,6 +22,7 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+// This file does not need require_login because capability to verify can be granted to guests, skip codechecker here.
 // @codingStandardsIgnoreLine
 require_once('../../config.php');