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/static/js/utils/helpers/formatInnerLink.js

@@ -0,0 +1,11 @@
+import urlParse from 'url-parse';
+
+export function formatInnerLink(url, baseUrl) {
+  let link = urlParse(url, {});
+
+  if ('' === link.origin || 'null' === link.origin || !link.origin) {
+    link = urlParse(baseUrl + '/' + url.replace(/^\//g, ''), {});
+  }
+
+  return link.toString();
+}