Set BookService.playing = true on 'play-time-update'
Use setBooks to determine currentPosition on play
Fixes title height
Only set currentBook it's a new book
Reduce Book.struture.playlist in size by join segments that are in sequence
Minor styling changes of book-player view. Disable buttons untill book is loaded
Merge branch 'lyt-3.0' of github.com:Notalib/LYT into lyt-3.0