Hide progress bar when playing theme media

CONTRIBUTORS.md

@@ -41,6 +41,7 @@
  - [Cromefire_](https://github.com/cromefire)
  - [Orry Verducci](https://github.com/orryverducci)
  - [Camc314](https://github.com/camc314)
+ - [danieladov](https://github.com/danieladov)
 
 # Emby Contributors
 

src/components/themeMediaPlayer.js

@@ -27,6 +27,7 @@ function playThemeMedia(items, ownerId) {
         }).then(function () {
             currentOwnerId = ownerId;
         });
+        document.getElementsByClassName("nowPlayingBarTop")[0].style.display = "none";
     } else {
         stopIfPlaying();
     }