Rename statuses to status since analysis can have only one status.
Rename statuses to status.  Code cleanup.
Don't set analysis status in monitoring task unless analysis fails.  Code cleanup.
Merge branch 'node_relationship_ui_feature' of github.com:parklab/refinery-platform into node_relationship_ui_feature
Code reformatting.
Merge branch 'node_relationship_ui_feature' of github.com:parklab/refinery-platform into node_relationship_ui_feature