Add: Most Viewed Items on homepage
Fix: most viewed items according to Ryan's comments
Add: dryad item citation style on most viewed items and limit the most viewed items number to 5
Add: dryad item citation style on most viewed items and limit the most viewed items number to 5
Merge remote-tracking branch 'origin/atmire-1446-12' into dryad-staging

Conflicts:
	dspace/config/dspace-solr-search.cfg
	dspace/modules/xmlui/src/main/resources/aspects/Discovery/sitemap.xmap
	dspace/modules/xmlui/src/main/webapp/themes/Mirage/Mirage.xsl
	dspace/modules/xmlui/src/main/webapp/themes/Mirage/lib/css/style.css