removed email-this link from small viewports
changed dash to css attribute
removed record number in result-view
specified selector because checkboxes in favorite list were removed
added control of export-visibility over config for rd
disable some toolbar-functionality on xs and sm viewports
added configurable visibility of tabs for different viewports (over html class)
hide holdings-qr-code on small viewports
Merge branch 'feature/3287_204_several_layout_adaption' into development