Introduce Save/Cancel/Delete buttons to Job/Edge panels to force saving

[NickOpenFn]

Currently, we rely on users to click on a save button in isolation at any point when changes exist.
This is very concerning as we have no automatic saving nor versioning in the system, which opens up a host of ugly potential for lost work (granted, not so much from the job editor perspective since they have to save to test the job or when adding job code (unless clicking esc, which we have another card to prompt with a warning #780)

A very simple way to force the save behavior is having the Job and Edge panels incorporate the "Save" & "Cancel" buttons there. If we implemented this, it would effectively remove the risk from the canvas nearly completely with the only exception being work on the current job/edge panel.