EAS: Easy App Switcher

Aug 27, 2016

- Optimized the memory usage of EAS.
- Rearrange the favorite apps by long press on them.
- Add favorite shortcuts to floating panel.
- Completed hide the floating button by long press the floating button, then click the "complete hide" in notification.
This is a workaround fix for display overlay issue with Android 6.0 .
- Bug fixes.