Settings: Increasing ring volume

Patch-set 2: Added czech translation
Patch-set 3: Fixed conflicts
Patch-set 5: Some fixes
Patch-set 6: rebased
Patch-set 7: Resolved conflict with another commit of czech translation

Change-Id: I97ba5d6f70e670b67888dc73167b9bdc8557ea9f
Signed-off-by: Petr Reznicek <kecinzer@gmail.com>