Settings: RU translation

Since "Swap volume buttons" is now moved to "Buttons" menu,
we need to update translation to hint that it is related to
screen orientation.

Change-Id: I92f4d2589ad0864a913006b4471bf060d180e859
Camera button support (2/2)

Add new bitmask for Camera button and options to rebind
its functionality.

Change-Id: I803d3b99adcdd6f2d9de15091709fc8c783ed5de
Settings: Use meaningful titles for gamma controls

There is good anecdotal evidence that the values we modify relate
to specific modifications (contrast, brightness, saturation and the
like) of the display, this change allows us to define descriptive
headings.

Change-Id: I2935924fd86f13e95b919e7b7c7a0bc931ac50bb
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2