Keyboard shortcut for "Zoom to fit selected node"

[nekohayo]

Just started using the "Zoom to fit selected node" feature and it's wonderful. I would like to use it so frequently that I would want a keyboard shortcut for it, since other zoom actions already have shortcuts.

Since Ctrl+6/7/8/9 already are taken by other things, maybe Ctrl+2 could be used here?

Side notes:

• "Zoom to fit selected node" lacked a bit of clarity for me when first using it, as I thought it was meant to be used for multiple selected nodes, but I realize now the intent is "Zoom to fit selected node and its children "; would it make sense to make its label more explicit like that?
• I noticed the zoom shortcuts are not present in the shortcuts cheatsheet dialog, I don't know if that's on purpose (as the menu reveals them) or if they were simply forgotten?

[phase1geo]

The zoom keyboard shortcuts already exist in the keyboard shortcuts cheatsheet (in the General tab).

I have created a new keyboard shortcut (Control-2) for the "Zoom to Selected Node Tree" menu item in the master branch.