Add Activity validation
Always store group members
Don't require displayName for object
Automatically upgrade groups
Add a documents feed per group
Endpoint for documents
Add a document to a group
Add personByOldID
Merge branch 'master' of github.com:e14n/pump.io
Merge branch 'master' into add-document
Reorganize 'add' method
Easier test for membership
Add stream.hasObject() to test for membership
Test adding a document to a group
Test reading document feed
adding files to the group
Test non-members accessing members, documents feeds
Don't let non-members post documents
Can remove from a group
Can remove from a group