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

templates/config/installation/features.html

@@ -9,6 +9,11 @@ MediaCMS.features = {
 		hideLogin: {% if CAN_LOGIN %}false{% else %}true{% endif %},
 		hideRegister: {% if CAN_REGISTER %}false{% else %}true{% endif %},
 	},
+	sideBar: {
+	  hideHomeLink: false,
+	  hideTagsLink: false,
+	  hideCategoriesLink: false,
+	},
 	media:{
 		actions:{
 			share: {% if CAN_SHARE_MEDIA %}true{% else %}false{% endif %},