HALO bugfixes

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

Change-Id: I04637a5ae96c3d9fa30188a320e13989c48f7f0c
FLAG_ACTIVITY_NEW_TASK re-added to floating windows

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

Change-Id: I45f3dcc816092daa4192be91828592a0b2b2ac59
Merge branch 'jb4.3-test' into halo