Add translation for Matrix Apps labs setting.

src/UserSettingsStore.js

@@ -31,7 +31,7 @@ export default {
             default: false,
         },
         {
-            name: "Matrix Apps",
+            name: "-",
             id: 'matrix_apps',
             default: false,
         },
@@ -40,6 +40,7 @@ export default {
     // horrible but it works. The locality makes this somewhat more palatable.
     doTranslations: function() {
         this.LABS_FEATURES[0].name = _t("New Composer & Autocomplete");
+        this.LABS_FEATURES[1].name = _t("Matrix Apps");
     },
 
     loadProfileInfo: function() {

src/i18n/strings/en_US.json

@@ -378,6 +378,7 @@
     "Never send encrypted messages to unverified devices in this room from this device": "Never send encrypted messages to unverified devices in this room from this device",
     "New address (e.g. #foo:%(localDomain)s)": "New address (e.g. #foo:%(localDomain)s)",
     "New Composer & Autocomplete": "New Composer & Autocomplete",
+    "Matrix Apps": "Matrix Apps",
     "New password": "New password",
     "New passwords don't match": "New passwords don't match",
     "New passwords must match each other.": "New passwords must match each other.",