Always show the overflow button

As with native action bars.

Change-Id: Ibb577bc3bcbf7b51b3b6d1fee9e72cb9390fabf9
Update the overflow touch background color from blue to gray

Use the parent theme's system touch background.

Change-Id: Icf6099cbe07f5f2b71afbf3823d1fddceca999c4
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>

Conflicts:
	res/values/colors.xml