Removed references to User.is_member(), which was removed from the acl branch.
New access: lookup_member

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 2e658c2bddda4ad8536d6fb5c78e423714136d28)
Core/maps: has_access now always returns a boolean.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 8b1c4e1ff1dd62e6fa2b832bcf3b1cf65b8d1862)
Core/loadable: The check on a channel's max access was always using self.name even if a different access level was specified.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 9f36fc4f8acad2ee271b9b4a13339bcff78d07d5)
createdb.py: Migrate wasn't migrating the sequence ID for groups.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 017cd9331e0fe050067c9ddb5324c4a553e1fe91)
newaccess: Added a missing session.rollback().

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit b02d388d617bdd7ad09d9cdf225c1f5bc906e551)
!addgroup: Fixed syntax error.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit da1d96815df7199c82ff316fa9d919e5e70a9d57)