beginning of relational database changes
update rel. db
split samplegroups and samples
sample attributes indexing approach (attribute=value)
relational database changes
relational db
Relational database (curator env)
relational db
relational db
relational db
relational db changes
Merge remote branch 'origin/master'

Conflicts:
	webapp/pom.xml
	webapp/src/main/webapp/WEB-INF/server-assets/stylesheets/biosamples-html-page.xsl
	webapp/src/main/webapp/WEB-INF/server-assets/stylesheets/detail-biosamplessample-html.xsl
	webapp/src/main/webapp/assets/stylesheets/biosamples_common_10.css