Frontent dev env (#247)

* Added frontend development files/environment

* More items-categories related removals

* Improvements in pages templates (inc. static pages)

* Improvements in video player

* Added empty home page message + cta

* Updates in media, playlist and management pages

* Improvements in material icons font loading

* Replaced media & playlists links in frontend dev-env

* frontend package version update

* chnaged frontend dev url port

* static files update

* Changed default position of theme switcher

* enabled frontend docker container

frontend/src/templates/config/installation/features.config.js

@@ -0,0 +1,50 @@
+module.exports = {
+  embeddedVideo: {
+    initialDimensions: {
+      width: 560, // In pixels.
+      height: 315, // In pixels.
+    },
+  },
+  headerBar: {
+    hideLogin: false,
+    hideRegister: false,
+  },
+  sideBar: {
+    hideHomeLink: false,
+    hideTagsLink: false,
+    hideCategoriesLink: false,
+  },
+  media: {
+    actions: {
+      share: true,
+      report: true,
+      like: true,
+      dislike: true,
+      download: true,
+      comment: true,
+      save: true,
+    },
+    shareOptions: [
+      'embed',
+      'fb',
+      'tw',
+      'whatsapp',
+      'telegram',
+      'reddit',
+      'tumblr',
+      'vk',
+      'pinterest',
+      'mix',
+      'linkedin',
+      'email',
+    ],
+  },
+  mediaItem: {
+    hideDate: false,
+    hideViews: false,
+    hideAuthor: false,
+  },
+  playlists: {
+    mediaTypes: ['audio', 'video'],
+  },
+};