Sleep as Android FULL 20130327

Needs Android 2.2 and higher devices.
Summary: Track your sleep and wake up gently with nature sounds in optimal sleep phase
Alarm clock with sleep cycle tracker.

Recent changes:
-Stability fixes
-Fix for rare crashing issue with custom tags
-Collapsible tags and deep sleep length in stats
-Fix for tag occurrence when sleep graph has N/A deep sleep
-Day stats use weighted average for aggregated DS%
-Precision fix in total deficit (thanks Michael)
-Pause period fix in graph import
-Meizu Compatibility
-Fix for occasional crash in noise playback on delete