OmniGears: add generic color picker preference

Also fixes existing color pickers rotation handling

Change-Id: I7f3280517aeed9bc70edfbcd69a08e567a6a7366
OmniGears: add NumberPickerPreference

Change-Id: I53a28a3680c5fc19a1fdb2055945278e64a70cff
OmniGears: cleanup DeviceUtils usage

Use isPhone from settings Utils

Change-Id: Ibb6ab741d0ed79df6e206482987da51cf45fdc17