Makes pop only take one message at a time (like it should...)
Apparently prefetch requires acknowledgement...

Revert "Makes pop only take one message at a time (like it should...)"

This reverts commit b35282690559086674706042a09407c0fe3d7e85.
Refactor: removed quit queue and file marshal
Merge branch 'master' into byebye-quit
Fix Runner::Pg to reconnect bad PG connections.

The fix was originally introduced in c842b4f8ef8d963b4c1ee7356ada4b9aa7164f0a,
but didn't work.