HALO: bugfixes

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

Change-Id: I062f65bf605cd61f30e252f84b8653e993bac738
Revert Fix vertical gesture touch calculations

Change-Id: I0acdc8c72a9fc16de17dcc89ca50adb6c3b7e518