QLab cueKey Map references

[jwetzell]

@sparks-alec So this seems to be the "problem" line that is clobbering references which I think is pretty obvious now how the objects in ...keyValues.children will have different references (although the same data probably). I think some lodash magic can resolve this or some by hand logic to do the merging. A problem that will arise will be when the arrays (existing cues and incoming cues) don't line up there will need to be some sort of reconciliation for adding/removing cues.