Fixes #32141 - Adding notif. about finish of rendering report (#8537)

Everyone uses a report templates for render important stuff from foreman
instance. Right know, the templates can take long time to render it and
when you don't want to send a report by email, you have to have open...

Fixes #31243 - subscription API for active job

Fixes #25723 - Prevent AJ.spawn_if_missing from creating duplicates

Previously we only checked execution plans which were in scheduled state. This
left us with a small window where the ActiveJob was actually present, but we
didn't detect it so we spawned a new one....

Fixes #19896 - Fix Style/RedundantSelf cop

Fixes #25478 - reports by mail (#6567)

Fixes #26020 - report templates in background process (#6503)

Fixes #25054 - fixes RSS rescheduling

Fixes #24763 - ensure reschedule rss notification on error

ActiveJob's after_perform doesn't run on any error: the rescue_from is
run after the callbacks. Also, the rescue_from is hiding the errors from
the task details when foreman-tasks is present: re-raising the error...

• Fixes #23611 - Provide helper method to run "service" active jobs

The root cause was we were triggering the active jobs too early,
sometimes even before the db was migrated. This led to all sorts of
errors. The provided helper method does not trigger the jobs when in...

Fixes #23220 - Humanized name for RSS notifications