Fix issue VUFIND-1039
Merge branch 'release-2.3'
Remove split from ajaxLoadTab. VUFIND-1039
Merge branch 'release-2.3'
Added missing translation (and improved string in the process).
Improved translations courtesy of Giannis Kourmoulis.
Aligning release-2.3 translations with master.
Merge branch 'release-2.3'

Conflicts:
	themes/root/templates/help/home.phtml
Bug fix: only restrict year ranges to 4 characters.
Merge branch 'release-2.3'
Added "fullDateRange" facets for dealing with granular dates.
Merge branch 'master' into searchtools