Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  7c73cb6f7ec52f0ee1bc5ffa289e6bcd3fef3dae

Implemented changes for translatewiki

Moved php i18n file to languages folder
Moved to Json i18n files
Added two missing messages in german
Fixed typo
Removed debugger statement
Fixed typo
Improved some messages
Added quotes in german
Removed de-formal json file because no message had polite form
Added key for suffix
Fixed Typo
Suffix msg is completely referenced now

Change-Id: Ia3d4fa898721eac7b9d8752019884fdf30748aa7