HALO bugfixes

1. some icons were overblown
2. tasking meant having your thumb on the speechbubbles

Change-Id: I04637a5ae96c3d9fa30188a320e13989c48f7f0c

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java

Conflicts:
	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
merge conflicts