SystemUI: fix recents animation in expanded mode.

Change-Id: I63b83763933468c4f1953341aad4317d142e8bb4
SystemUI: fix RecentPanel position in landscape mode.

In landscape mdoe we forcing ltr layout direction. This cause
call to resolvePadding too late and discards paddings
computed by fitSystemWindows. To workaround this we can catch
onRtlPropertiesChanged and force executuin of fitSystemWindows
one more time. To fix scroll issue after padding will be setted
we calling scrollTo with correct position.

Change-Id: I0ac10ac3554142b15114ce7588b61debda27235a
Reimplement expanded desktop on top of immersive mode.

Change-Id: I8ed08afebef0bb08a2694b1dbdd6dd1887b5b065

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java