SystemUI: Danish strings

Also added translation for new 'NavigationBar : Customization' feature. (Change I8903b85b)

Change-Id: If730d29572a84c01c9cf14e6711e5edadb55e033
Merge "SystemUI: Danish strings" into cm-10.1
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1