Merge branch 'development' into load_r2rml_from_url
Eliminated KR2RMLMapping dependencies on worksheets/hnodeids

WorksheetR2RMLJenaModelParser now no longer immediately processes
transformations.  Needs to be called after parsing.
Merge branch 'load_r2rml_from_url' of github.com:InformationIntegrationGroup/Web-Karma into load_r2rml_from_url