Instead of the additional 'is_private' field, we now just use
the permission system and set/remove world GET permissions.
'is_private' is still kept for backward compatibility and possibly
easy querying for public projects, and is always set based on
world GET permissions.
Manage users of a project. In this initial implementation, we handle
addition and removal of a user to the admin group of a project. No
changes are done on the project itself.
This also updates Cerberus to 0.9.2 and simplejson to 3.8.2.
I've also changed the way we get to the application object, by replacing
from application import app
with
from flask import current_app
Certain fields are limited for subscribers. Also, subscribers are checked
against the project permissions.
Users with the 'admin' role can edit all fields, on any project.
