Revert "Revert "Issue #835090 by Karsa, Deciphered, nedjo, fearlsgroove, Dane Powell, Angry Dan, mgifford, Jibus, Bußmeyer, tomb, c4rl | rjacobs: Set context reaction menu trail.""

This reverts commit f3e501b551e3458b84b61b256573c66e721fad4f.
Undoing last commit because of possible DB breakage.  See 1.4 release notes.
Issue #2358313: Remove double check_plain on mlid 0 items