Settings: EL translations

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I18be65148e34a8cfc5412da9aab808596bd56908
Settings: IT translations

Change-Id: I8c21de940c5f0d9e79a38cf8205dfc48b72fb531
Settings: Gamma calibration tunables

- Add support for negative values to gamma.
- Remove logs.

Change-Id: Ie06bf68bbc8e875d36966ed7f98a6beadb0169cc
Merge "Settings: Gamma calibration tunables" into cm-10.2
Merge "Settings: EL translations" into cm-10.2
Merge "Settings: IT translations" into cm-10.2
Merge branch 'cm-10.2' into martincz