Merge tag 'sparks-1.3.5' into develop

1.3.5
fabric/brew: don't use `sudo` at all, `brew` is not happy with it. Can't seem to find ho it could have worked until then…
A little work on the brew side, to make able to bootstrap a Mac from another. No need to copy sparks there and run `install`, just `fab -H other_mac base` :-)
Implement the ACLs replication task. It helps restoring local permissions, taken from a known good machine. It should be usable remotely as any other task, but I didn't test it because the `origin` I had handy was not reachable.
Merge branch 'release/1.3.6'