Ignore builtin permissions for concretely inherited classes
Create 'Editor' role for projects on their creation
Add unique constraint for project slugs
New view to add projects
Fix typos in project admin views
Update documentation in fabfile
New management command for making projects

Additionally, new addition to the fabfile: if a users creates an
installation from scratch, the `sync_database` command will prompt for a
username and project to be created
Try to reduce the load time for project roster view

WIP-- revisit when there's time