CSPACE-711: Add an 'unsavedChanges' flag.
CSPACE-711: Add an 'unsavedChanges' flag.

cspace-deployment/ui,cspace-deployment/ui,cspace-deployment/ui,cherryhill/collectionspace-ui,cspace-deployment/ui,cherryhill/collectionspace-ui,cherryhill/collectionspace-ui,cherryhill/collectionspace-ui,cspace-deployment/ui