Update to ActionBarSherlock 4.4.0

Signed-off-by: Greg Meiste <greg.meiste@gmail.com>
Fix crash if user double clicks "Remove Ads" option

Found by monkey testing.

Signed-off-by: Greg Meiste <greg.meiste@gmail.com>
Support monkey testing. Closes #88

Prevent the monkey tester from accidentally submitting crap to
the server.

Signed-off-by: Greg Meiste <greg.meiste@gmail.com>
Periodically re-register GCM registration ID to PTW server. Closes #89

Signed-off-by: Greg Meiste <greg.meiste@gmail.com>
Add launcher icon for xxhdpi density. Closes #82

Signed-off-by: Greg Meiste <greg.meiste@gmail.com>