GUI: projections bug

1. Create at least 2 jobs and go to Projection presentation for both
2. Add a projection to each intensity map.

Problems:

1. If delete the top job in the list --> CRASH
2. If move projection in one job and go to another job, then, after noticeable blink, the projection in the second job becomes nonselectable (not always work). Switching to another job and back helps. But if delete the job after that --> CRASH.
3. In projections plots you may see all projections from all jobs simultaneously.