- added DynamicSupervisor, which starts Pleroma deps and restarts config dependent deps
- added pleroma installer, where user can configure database credentials
and pleroma config. Settings are saved into file and in database
- added versioning for in database config. New version is created from
changes which are passed to config update/delete endpoint. Every version
contains backup with all changes added through update. Versioning
supports rollbacks with N steps. With a rollback, all versions that
come after the version on which the rollback was made are deleted.
Since python doesn't have a way to lock deps for a particlar project
by default, I didn't bother with it. This resulted in mkdocs updating at
some point, bringing a breaking change to how tabs are declared and
broken tabs on docs-develop.pleroma.social. I've learned my lesson
and locked deps with pipenv in pleroma/docs!5. This MR updates Pleroma
docs to use the new tab style, fortunately my editor did most of it.
Closes#2045
Large part of it was no longer true (i.e none of the changes need
recompilation anymore and you can't brick an instance by changing them,
it's not necessary to manually truncate the db manually anymore)
