Conduct Preview via subFlow

[b1scuit-thi3f]

subFlow is a useful object within JIMI, but it isn't always very obvious where the other end of the subFlow is. I think two options would be useful to add:

• The ability to jump to the target trigger within it's conduct. This would allow a user to quick find the conduct should they wish to modify that part of the flow
• The ability to get a "preview" of the conduct the subflow sits in (here's a terrible sketch of what I mean)

This would hopefully increase the understanding of how the flow all comes together within a JIMI flow.