Issue #2918866 by jonathanshaw, joachim, SmovS, brunodbo, Evaldas Užkuras, Daniel Korte, tBKoT, gordon, stmh, Emil Stoianov, ankithashetty, adamfranco, CRZDEV, zengenuity, jcnventura, bojanz, andypost, killes@www.drop.org, Chi, AstonVictor, borisson_, rinasek, thronedigital, freality, John Pitcairn, Martijn de Wit, jsacksick: Add support for unique jobs