Implemented changes for translatewiki

Moved to Json i18n files
Removed unused keys from german language
Fixed typo in key
Added GENDER support to mail messages
Improved error message
Fixed typo
Improved GENDER support in english and qqq
Added missing period
Added GENDER support to all personalized messages

Change-Id: Ic6b6ca273b6b347642306b6b649514237eeb01a3
Merge "Implemented changes for translatewiki"