added acceptance test #53
Added simple form of typecheck
Added typecheck for photo and cv in student. Tests still missing. Filenames of cv and photo are displayed in edit form as well as cv file name in show form
Finished: Überarbeitung der Profil-Edit-Seite
Merge branch 'develop-js' into develop

Conflicts:
	Gemfile.lock
Merge remote-tracking branch 'origin/develop-ja' into develop-ja-jobs-history
Merge remote-tracking branch 'origin/develop' into develop-ja-jobs-history
added Job Offers archive #53