FLAG_ACTIVITY_NEW_TASK re-added to floating windows

ActivityStack modified to not cancel results if window is floating and "new".

Change-Id: I45f3dcc816092daa4192be91828592a0b2b2ac59
Halo button position in tablet mode

Change-Id: I9eec8d14cff4bd4d0c2a227d5f1c6bae7a0875d3
HALO Size (1/2)

Change-Id: I2780dfee66b0b80b57c62b83c40609104fe3c279

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/halo_bubble.xml
	packages/SystemUI/res/layout/halo_speech.xml
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
	packages/SystemUI/src/com/android/systemui/statusbar/halo/HaloProperties.java