Implemented changes for translatewiki

Moved php i18n file into languages folder
Moved to Json i18n files
Removed unused in message in german
Added PLURAL support to message
Fixed typo
Improved message removed superfluous word

Change-Id: I20b9ae3e3a297d88a68cc1aa35588cbe9f6efd40
Merge "Implemented changes for translatewiki"