PackageInstaller: Quick Mode (1/3)

quick mode shows users smaller dialog and quick install progress
by hide windows.
uninstall also changed to smaller dialog

Conflicts:
	src/com/android/packageinstaller/InstallAppProgress.java
Quick Mode: improve land view and handle theme color
Quick Mode: alpha changes
Quick Install: Tweak window background alpha
Quick Install: Improve UE

1. Add notification while installing
2. Hide window while uninstalling
3. Show app name on toast
Quick Install: Better handle install notification when multi-task