made denotion modal bootstrapy #301
Job prolonging only for running jobs
some message translations for job offers
a small improvement
enforced cancan for staffcontroller
Locale based date formatting
added end date to view tests job offer
removed unused before filters
cancan for studentscontroller
cancan for applicatons
Merge branch 'develop-ak' of https://github.com/tkowark/hpi-hiwi-portal into develop-ak
added external employer translation to model + form
removed some turbolinks
some whitespaces
some more whitespaces
removed user_status controller
removed unused languages controller
removed unused programming languages controller
text changes for #282
refactored authorize call