Merge branch 'release/0.7.3' into develop
basic search
get /search/xxxx
Merge branch 'feature/search' into develop
search view
search
queue
queue
queue
Merge branch 'feature/search' into develop
artist search and album search
enable silentAudio again

Without silentAudio, something was wrong with audio session handling.
improve search and playing queue ui.
remove unused sources
fix broken spec
0.8.0
Merge branch 'release/0.8.0'