Upgrade QuickReturnBar to makovkastar's FloatingActionButton implementation; add ButterKnife
Fix reversed subtitles in alumni directory
Fix subtitle hiding/unhiding with NavDrawer
Ensure data doesn't go stale
Use filtered data source
Beta release 2.2.1
Screenshots for v2.1.2
Merge branch 'master' of https://github.com/ronaldsmartin/APO-DZ-Android into develop