Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  51169ae40ec871f32ccfe3fcd9cf2f9c8a4185cb

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