Present the mutable permissions by default.  Allow the administrator or
owner to toggle the displayed permissions to see how the user
and team permissions are applied to a repository.

Also hooked-up GC settings in the Manager.

The order of permissions defined within a user or team is preserved
during read and write.  This order is important for determining the
regex match used within the user or team object.

If the user is an admin or repository owner, then RW+
Else if user has an explicit permission, use that
Else check for the first regex match in user permissions
Else check for the HIGHEST permission from team memberships

If the team is an admin team, then RW+
Else if a team has an explicit permission, use that
Else check for the first regex match in team permissions

If this feature is enabled then permitted users can automatically create a
repository when pushing to one that does not yet exist.  Permitted users
are administrators and any user with the CREATE role.

If the pushing account is an administrator, the created repository may be
located in any folder/project space.  This reposiory will inherit the server's
default access restriction and authorization control.  The repository owner
will be the pushing account.

If the pushing account is a regular user with the CREATE role, the repository
can only be located in the account's personal folder (~username/myrepo.git).
This repository will be VIEW restricted and accessible by NAMED users.  The
repository owner will be the pushing account.