Previous/next jobs #55
Description
Is your feature request related to a problem? Please describe.
Currently you cannot easily tell The rollingstock Flow from JobPathEditor panel
Describe the solution you'd like
For each coupled rollingstock, select its previous job (or "staging yard" if no previous job was found). Then build a list and show it in JobPathEditor.
Similar concept for "next Jobs" selecting next job after uncoupling a rollingstock item.
The list should be automatically update when user modifies couplings in any involved job, and should be interattive with context menu to quickly view other Jobs and specific rollingstock items.