added custom list views
1) library list
2) downloads
added custom list views
1) library list
2) downloads
fixed loading text hiding bug
added live filter on library
fixed some adapter misprints
fixed playing indicator bug and cleaned up adapters
1) redesigned action bar
2) changed model-adapter communication pattern
3) fixed some player bugs
added rename feature
cleanup
added edit button and fixed some edit bugs
added smooth scrolling and fixed some list view related issues
test commit after merge with exp