Issue #3227824 by brianperry, nod_, D34dMan, ravi.shankar, alexpott,...

Issue #3227824 by brianperry, nod_, D34dMan, ravi.shankar, alexpott, johnny5th, bbrala, yogeshmpawar, Suresh Prabhu Parkala, larowlan, joachim, benjifisher, baddysonja, xjm, gabesullice, casey, lauriii: Move the linkset functionality from the decoupled menus contributed module to core's system module