added job_offers to detailed chair page #51
Merge remote-tracking branch 'origin/develop' into develop-ja-chairs-detailed-page

Conflicts:
	app/views/chairs/show.html.erb
refactored search_filter_sort form
New Joboffer Button inline with Headline
added jobOffer lists to detailed chair page, tests not green [ci skip]  #51

+ lot of refactoring
Merge branch 'develop-ja-chairs-detailed-page' of https://github.com/tkowark/hpi-hiwi-portal into develop-ja-chairs-detailed-page

Conflicts:
	app/views/job_offers/index.html.erb
fixed job_offer_controller and job_offer_view tests, #53
Merge remote-tracking branch 'origin/develop' into develop-ja-chairs-detailed-page

Conflicts:
	app/controllers/job_offers_controller.rb
	app/models/job_offer.rb
	app/views/chairs/show.html.erb
	app/views/job_offers/_overview.html.erb
	app/views/job_offers/_sidebar.html.erb
	app/views/job_offers/_sort_filter_search.html.erb
	app/views/job_offers/archive.html.erb
	app/views/job_offers/index.html.erb
	config/locales/views/job_offers/de.yml
	config/locales/views/job_offers/en.yml
	config/routes.rb
merged develop
fixed sort filter search sidebar
fixed details view style
added status strings for "working" and "open"
added some to seeds #51