Applies the changes defined in https://github.com/hometown-fork/hometown/releases/tag/v4.5.6%2Bhometown-1.2.0
(with one exception: I ignored the optional fasp Sidekiq queue)
There was a long gap in upstream releases,
and the hometown fork skipped over 4.3.x and 4.4.x
so there are a lot of changes here.
NB: this isn't the current up-to-date version of hometown,
but the later releases suggest doing the 1.2.0 upgrade
before moving on. So I'm giving Coop-Cloud operators that option