First block of fixes for review

- popup player click event changed to show/hide buttons
- queue panel WORKS. Finally
- removed theme overriding in fragment
- added scroll to top after stream selection
- adjusted padding/margin of buttons in player
- player will itself in fullscreen after user hides it in fullscreen mode and then expands it again while video still playing

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -301,6 +301,7 @@ public class NavigationHelper {
             VideoDetailFragment detailFragment = (VideoDetailFragment) fragment;
             detailFragment.setAutoplay(autoPlay);
             detailFragment.selectAndLoadVideo(serviceId, url, title, playQueue);
+            detailFragment.scrollToTop();
             return;
         }