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/settings/optionsEmbedded.js

@@ -0,0 +1,42 @@
+let EMBEDDED = null;
+
+export function init(embeddedVideo) {
+  EMBEDDED = {
+    video: {
+      dimensions: {
+        width: 560,
+        widthUnit: 'px', // Valid values: 'px', 'percent'
+        height: 315,
+        heightUnit: 'px', // Valid values: 'px', 'percent'
+      },
+    },
+  };
+
+  if (void 0 !== embeddedVideo) {
+    if (void 0 !== embeddedVideo.initialDimensions) {
+      if (!isNaN(embeddedVideo.initialDimensions.width)) {
+        EMBEDDED.video.dimensions.width = embeddedVideo.initialDimensions.width;
+      }
+
+      if ('string' === typeof embeddedVideo.initialDimensions.widthUnit) {
+        if ('percent' === embeddedVideo.initialDimensions.widthUnit) {
+          embeddedVideo.initialDimensions.widthUnit = 'percent';
+        }
+      }
+
+      if (!isNaN(embeddedVideo.initialDimensions.height)) {
+        EMBEDDED.video.dimensions.height = embeddedVideo.initialDimensions.height;
+      }
+
+      if ('string' === typeof embeddedVideo.initialDimensions.heightUnit) {
+        if ('percent' === embeddedVideo.initialDimensions.heightUnit) {
+          embeddedVideo.initialDimensions.heightUnit = 'percent';
+        }
+      }
+    }
+  }
+}
+
+export function settings() {
+  return EMBEDDED;
+}