Catch if search returns nothing

	modified:   app/assets/javascripts/orangeproton.search.js
	modified:   config/locales/de.yml
	modified:   config/locales/en.yml
	modified:   config/locales/fr.yml
	modified:   config/locales/it.yml
Merge branch 'development' of github.com:pse4/orange-proton into development