[calligra/calligra/2.9] krita: updated view rotation menu. also put a couple notes with actions that were not showing up

[Boudewijn Rempt]

The zoom manager actions are special: the exist per view/canvas, not in 
the viewmanager as such because it's the action that's keeping track of 
the zoom level of a view.

That's also why the zoom actions don't 'stick' when placed in the toolbar.

Boudewijn