Settings LightSettingsDialog: update led on text change

Change-Id: I135f37829b9b4fb2166afac9d9531b76a62f3ef7
Merge "Settings LightSettingsDialog: update led on text change" into cm-11.0
[2/2] Settings: statusbar clock customization + color picker

- added slims clock and date customizations for status bar
- added our own modded marginov color picker which we use as default