#326 integrated styles, javascripts and main template from new website templates
#326 hack for navbar implemented
#324 job offer pages working

increased job offer pagination to 15 job offers per page
#324 continued integrating new layout.
Merge remote-tracking branch 'origin/develop' into new-homepage

Conflicts:
	app/views/devise/sessions/new.html.erb
	app/views/layouts/application.html.erb
	app/views/staff/index.html.erb
	app/views/students/index.html.erb
	app/views/students/show.html.erb
	config/routes.rb
	spec/controllers/home_controller_spec.rb
continued work -.- #326
Merge remote-tracking branch 'origin/develop' into new-homepage

Conflicts:
	Gemfile.lock
	app/views/students/show.html.erb
	config/routes.rb
adapted all sites to new design #324
implemented logout button #326
readied flash messages
Merge remote-tracking branch 'origin/develop' into new-homepage

Conflicts:
	app/views/employers/index.html.erb
	app/views/employers/show.html.erb
	app/views/layouts/application.html.erb
Merge pull request #366 from hpi-swt2/new-homepage

New Design adaption