Remove description from the list of required attributes for communities.
Add method for creating/looking up the root community of the tapas graph.
Actually assign the expected pid to the root community - add tests.
Use root community method in community_creator.
Use collection= instead of collection_id= in core_file creation.
Update the core file creation workflow to expect params 'nid' and 'collection' instead of 'node_id' and 'collection_id'.