App sidebar (1/2)
Change-Id: I2bf386f85c0b5bd7dfb35be115dcb62671ce2907
App sidebar: floating window

long click to launch app in floating window

Change-Id: I9b5df1cceb2314ee0f8727136c007c481346a264
App sidebar: some adjustments
- Cleanup
- fix disappearing appbar on changing appbar position
- may fix endless FC on changing appbar contents

Change-Id: I2e94290dc128447f0da8937eb5dc0ed10296a155
App sidebar: notify if app is not installed

better than force close

Change-Id: I9eebe1a3a4be2dad16ed9a8cff9c0694900d833d