cleaning up en.yml and fixing mistakes

the next steps to #415 (closed)

• delete bento.label.bento_search.results because its just not needed anymore
• view.labels.patron has to become view.labels.fullview (with value "Full View")
• move the strings missed in contact/gkr.html.erb and contact/nge_*.html.erb (all the strings in h2 tags)
• move "change your view" in view/index.html.erb
• remove all non-existent translations