(no-ticket) select_related() on admin submitQueue

Change-Id: Iadac14dd5e0878dd59fe0f22da54d21e0d98c3fb
Revert "SIO-1378 Add mandatory sources publishing"

This reverts commit 7b7a1fab60e4fc623d7aa29247d7bc276f2ed08e.
Merge "(no-ticket) select_related() on admin submitQueue"