added translations to upload controller
typo
uploadtokenlistener refactored with translation handler
reanamed xml validator added phpspecs for the xml validator
Merge remote-tracking branch 'origin/dev-master' into chartinger
changed invalidcatrobatfileexception to be inline with runtime exception
better output in program importer
changed invalidcatrobatfileexception to be inline with runtime exception
better output in program importer
Merge branch 'chartinger' of https://github.com/Catrobat/Catroweb-Symfony into chartinger