Removes not used chapter headline
Adds selected chapter to overview
Fixes related chapter in play screen
Renames chapter-overview component in chapters-overview
Extracts chapter item component used by chapters overview
Fixes selection of video chapter
Moves video and bookmark events subscription to module run
Makes home and play screen only watching the model for updates
Removes eventsBus dep from bookmarks component
Fixes videos watch
Fixes beaming to tv
Improves watch condition on new videos
Uses composite key videoId_chapterId in bookmarks
Shows chapter item in the bookmark section