Remove menu overflow button from button settings

We got this button already in outr user Interface settings
and the java code for this preference was already deleted anyways

Change-Id: I6dde158bc007137853cb1ed1cdab090d3c1d7b66
Add basic-level gamma calibration to hardware tunables

Change-Id: I3223cb111889be71175dee67723ae44cba051e23
Settings: AdaptiveBacklight support

Add support for adaptive backlight technologies like NVIDIA SmartDimmer, QCOM CABL or Samsung CABC.

Patchset 2: Use internal shared prefs to store the smardimmer setting
Patchset 3: Rename to AdaptiveBacklight
Patchset 4: Reorganize settings and strings to follow design guidelines
Patchset 5: CleanUp
Patchset 6: Added suggestions
Patchset 7: Sync default value. CleanUp.

Depends	on http://review.cyanogenmod.org/#/c/48465/

Change-Id: Ib0e05770bf90b664a00e65f46d32cc9a07be1377
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Cleanup: Don't use getApplicationContext() where not needed.

Change-Id: Ie2232857cf88c98c9f2b76996a500e3d3696e6e2
Use a common base class for HW tuning sliders.

Change-Id: I61b458ffb08eb765f8a720657056243f56e76f17