Manually start and stop web service because inside setup_worker is too late to add a child service (since the worker service is already started).
Raise an explicit error when we receive a message on an un-owned tag (@hodgestar, @jerith, @smn).
Fix restart_all support for processes that aren't in a group (or are in a group with the same name as themselves and no other processes). (@hodgestar, @jerith).
Merge branch 'develop' into develop-frontend