cLock: Add ability to change font and monochrome icon colors

This commit adds the ability to select individual colors for the
various panels of the cLock widget.  It will also apply the selected
color as an overlay on the alarm, weather condition (mono only)
and the calendar icons.

The colors supported are the standard Android 4.x Holo color set
with White, Black and Grey added.

IMHO a full color picker would be an overkill for this feature.

Change-Id: I621669f49c414b0bbd1236b9d0fb2f0c08e4beea
Added translation for weather_show_when_minimized

Also, change strings according to http://review.cyanogenmod.org/#/c/33355/

Change-Id: Iada2ed24f1df9e4abbb8af19b026a5b7d2146db6
cLock: User proper method for enabling location settings

Change-Id: I3837e2c4f0aa35411a73f064074aec6d03076766