Will only display "Groups" section if the user is in any groups
edited so that any new site it creates will use the REFINERY_INSTANCE_NAME and REFINERY_BASE_URL
Implements user-accessible edit forms for DataSets, Projects, and Workflows that support Markdown.  Just short of finishing the ticket because I didn't do forms for analyses.  (T_T)
Merge branch 'develop' of https://github.com/parklab/Refinery into develop