Mms: Simplified Chinese Translations

Updated translations, fixed file permissions, and sync'd strings.xml
to AOSP master.

Copy of http://review.cyanogenmod.org/#/c/37305/ for staging.

Change-Id: I21a7dc5cfa0e5029f61211d2dd8a6a849baf9fe9
Merge "Mms: Simplified Chinese Translations" into cm-10.1-staging