MBS-6022, add image file extension to the data sent in pgq events.
MBS-6022, include upgrade script.
MBS-6022, only replace the affected triggers during upgrade.
Merge branch 'mbs-6022-pgq-suffix' into beta

* mbs-6022-pgq-suffix:
  MBS-6022, only replace the affected triggers during upgrade.
  MBS-6022, include upgrade script.
  MBS-6022, add image file extension to the data sent in pgq events.