Merge pull request #154 from tkowark/develop

Merging develop into master to fix production errors
Merge remote-tracking branch 'origin/develop'
Merge branch 'develop' of https://github.com/tkowark/hpi-hiwi-portal
Merge branch 'develop' of https://github.com/tkowark/hpi-hiwi-portal
Merge pull request #163 from tkowark/develop

Refactorings + Improvements
Merge branch 'develop' of https://github.com/tkowark/hpi-hiwi-portal
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
typo
deactivated student list for job_offers
deleted line since error still occured
finish navigation bar #91
Merge branch 'develop'
removed unnecessary controller methods
removed unnecessary controller methods #2
refactored update_from_params_for_languages
Revert "Merge branch 'develop-js' into develop"

This reverts commit 8af93f875b03522d5bc2eb775e2c2aea19726e57, reversing
changes made to 44e8b108fff47da23cd674522092cd5703e17251.

Conflicts:
	config/locales/views/students/de.yml
typo “owerview”
renamed layouts.owerview as well