use .gitignore files to add required empty folders
LIBDRUM-100. improve Java performance for groovy/fix_etd_subjects.groovy

https://issues.umd.edu/browse/LIBDRUM-100
LIBDRUM-93. Updates needed to DRUM pages

Correction based on email from Terry Owen

https://issues.umd.edu/browse/LIBDRUM-93
bump pom version to 1.7.2.1
Merge branch 'release/1.7.2/1' into develop

Conflicts:
	dspace-api/pom.xml
	dspace-discovery/dspace-discovery-provider/pom.xml
	dspace-discovery/dspace-discovery-xmlui-api/pom.xml
	dspace-discovery/dspace-discovery-xmlui-webapp/pom.xml
	dspace-discovery/pom.xml
	dspace-jspui/dspace-jspui-api/pom.xml
	dspace-jspui/dspace-jspui-webapp/pom.xml
	dspace-jspui/pom.xml
	dspace-lni/dspace-lni-client/pom.xml
	dspace-lni/dspace-lni-core/pom.xml
	dspace-lni/dspace-lni-webapp/pom.xml
	dspace-lni/pom.xml
	dspace-oai/dspace-oai-api/pom.xml
	dspace-oai/dspace-oai-webapp/pom.xml
	dspace-oai/pom.xml
	dspace-stats/pom.xml
	dspace-sword/dspace-sword-api/pom.xml
	dspace-sword/dspace-sword-webapp/pom.xml
	dspace-sword/pom.xml
	dspace-xmlui/dspace-xmlui-api/pom.xml
	dspace-xmlui/dspace-xmlui-webapp/pom.xml
	dspace-xmlui/dspace-xmlui-wing/pom.xml
	dspace-xmlui/pom.xml
	dspace/modules/jspui/pom.xml
	dspace/modules/lni/pom.xml
	dspace/modules/oai/pom.xml
	dspace/modules/pom.xml
	dspace/modules/solr/pom.xml
	dspace/modules/sword/pom.xml
	dspace/modules/xmlui/pom.xml
	dspace/pom.xml
	pom.xml