Add "View" to mainwindow menu bar, and replace right-click menu with something context specific.
|Status:||New||Start date:||13 May 2019|
The MainWindow menu bar is currently underused; it only has
"File", "Settings", "Help" entries. Add a "View" entry, and
equip it with the choices that are currently available from
by right-clicking in the model editor, or in some other widgets.
The right-click menu can then be used for more context specific
purposes. Specifically: In the real-space viewer, the right-click
context menu could be used for saving an image to disk (#2352),
but also to replace the buttons "Default View" ... "Reduce"
which currently occupy a menu bar of their own.