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.
Missing form-controls on select elements.
Merge branch 'release-2.3'
Search History: Only show MyResearch sidebar if logged in.
Merge branch 'release-2.3'
Reverting 383e22d based on a previous design discussion.
Merge branch 'release-2.3'
Lightbox fixes for bulk actions and cart.
Style fix.
Let multiple-enabled select elements be as tall as they want. MESE rights.
Reverting style changes to move to release-2.3 and merge in.
Let multiple-enabled select elements be as tall as they want. MESE rights.
Merge branch 'release-2.3'
Added tests.