fix some search view problems and implement article rating
Merge branch 'develop' of github.com:DanielMSchmidt/vergleichsportal into feature/article-rating

Conflicts:
	lib/search/buch_de_search.rb
Merge branch 'develop' of github.com:DanielMSchmidt/vergleichsportal into feature/article-rating

Conflicts:
	app/controllers/home_controller.rb
	app/models/article_cart_assignment.rb
	lib/search/buch_de_search.rb
Merge branch 'feature/article-rating' into develop