Add Afrikaans translation

Translated Settings to Afrikaans

Patchset 15 - Update to AOSP terms and writing style
            - Make strings consistent

Change-Id: I29a95214d2bdc33c037aebe79c11cb19aa5ce7ac
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_packages_apps_Settings into cm-10.1