Hide widgets while opening project
- Hides vies while updating model. It looks smoother to the user and even symptomatically solves #1050 (closed) (but I'd keep it open for a while).
- Deselects job list before opening project. This prevents one way to get segfault in JobView (meanwhile there are many others)
- Dynamically updates masks geometry while resizing Colormap --> closes #1037 (closed)