Port Commit 1138f07 from dev
fix for PLFM-1730
fix pom
merging upstream
Merge pull request #199 from brucehoff/develop

PLFM-1730
Merge branch 'release-1.19' into develop

Conflicts:
	src/test/java/org/sagebionetworks/web/unitclient/widget/entity/EntityPropertyFormTest.java
small changes
some work on prov
partial work on prov
Moved to Graph based implementation of Provenance
added NChart rendering, part 1
Moved to Interface model for JSO objects
working layout first pass
Build graph with stack based async-traversal
Added arrows
Change to new widget description config (partial)
Added expand nodes and undefined checking
added full screen provenance view. removed JUNG dependency
Added version lookup for starting references
Fix NChart javascript issue, expand editor widget to creat list and added display height parameter