[Settings] Add clock styles and Clock color picker (2/2)
This commit is a combination of CM AOKP and SLIMROMS work

features:

- Clock and date enable/disable
- Clock and date position
- AM/PM styles multilang support
- Fully customizable date in style and format
- Fully dynamic settings

Change-Id: If4d648d2af182ea7d13f4757433564e1b2ab6a50