Port watches logic to symfony event listener
remove unused import functions. If and when replicator gets ported, they will
need to be reimplemented differently anyways
Remove dedicated attachment parent triggers, this can be implemented directly in
event handlers that want to use this feature
Remove trigger missed in last commit
Use dedicated events for approval & parameters, since they are sufficiently different
and clean up some compat code
Move cache management logic to subscriber model (partially, at least..)
some cleanups to init routine
Move midcom_config global to compat layer and convert remaining usage to getter
Move midcom autoloader to compat, composer's autoloader renders it inaccessible anyways
Make sure we don't leave dangling memberships behind
Fix oversights
Fix oversight
Small simplification
Small simplification
Move activitystream component to separate repo and make it optional