small media displays format category icons

icons were set to hide on small devices, they now show.
I also moved the gray separator below the availability control buttons
proposed vail theming

styling updates
updated header background image
updated logo image
browse category links directly to records for grouped works with single entries

when a grouped record returns only 1 related result, links to the
individual record rather than the grouped work are used for the browse
categories.
this file needs to be updated for mysterious reasons.
Merge remote-tracking branch 'origin/M2014.02.0' into M2014.02.0

Conflicts:
	vufind/web/interface/themes/responsive/Search/Recommend/TopFacets.tpl
	vufind/web/services/Admin/DBMaintenanceEContent.php