Change manifest properties (#285)

* Change full screen to standalone

This will make the notification bar visible

* Added theme color

Now the address bar will match the color of the search panel.

* Remove orientation:"portrait"

* Re-adding orientation property

This time, with "any" value

client/src/manifest.json

@@ -1,8 +1,9 @@
 {
   "background_color": "white",
+  "theme_color": "black",
   "description": "A federated video streaming platform using P2P",
-  "display": "fullscreen",
+  "display": "standalone",
-  "orientation": "portrait",
+  "orientation": "any",
   "icons": [
     {
       "src": "/client/assets/images/icons/icon-36x36.png",