config changes
fixes #313
Merge remote-tracking branch 'origin/develop' into develop-ak
more config changes
probably fixed url exploit #316
last translations #265
last translations #265
added validation for vacant_posts
test url visitability #316
keeps job offers open until all vacant_posts are taken
added some more role checks to employers_controller/edit #316
Merge remote-tracking branch 'origin/develop-ja' into develop

Conflicts:
	app/controllers/employers_controller.rb
this should quick fix #312
makes assigned students 'fireable'
updates seeds, small layout change for user_list of assigned_students
implements comments for #319
translation fix for bug #311
Merge pull request #320 from tkowark/develop-js

flag fix for heroku
Merge pull request #319 from tkowark/develop-ak

Develop ak
Merge remote-tracking branch 'origin/develop'