When setting ACLs on a repository (invite-only review groups and users),

saving the repository, and then making the repository

publicly-accessible to the team, the ACLs were remaining as part of the

repository's settings. This caused problems down the road in situations

such as a repository being owned by a Local Site and a user on an ACL

being removed from the site, which would trigger a hidden validation

error and prevent saving the repository.
We now clear out the ACLs whenever we make a repository public, or when

loading a public repository into the repository form. This should

prevent this sort of problem from occurring in the future, and better

meet user expectations.

Tested loading and saving public repositories that had ACLs set, and

verified that the ACLs were removed.
Tested loading and saving private repositories that had ACLs set.
Unit tests passed.