Now that we have branched master will be called 9.1.1-ALPHA
Update release notes for the 9.1.0 BETA & release.
Increase the memory device for GUI upgrade even more

Now that we embed the jail it got a lot bigger.
Specifically set canmount=on for bottom level dataset.
Don't assume that jails exist
Only suggest a bridge ip if NAT is enabled
Update jail migration script to work with recent warden changes

- This isn't quite working yet, networking is broken.
Restart django after a migration
Merge commit '4b191e34ddbd2777f7bf908d68547a2a4cf4fa78' into 9.1.0
Merge commit '8e7cca53f99dd7b5b90980c917d5d934027154a3' into 9.1.0
Merge commit '6a0d7bf3474f79081fc5ffd4afaaf2ba45da27ea' into 9.1.0