Swap mouse shortcuts RMB+LMB/MMB

[Dreamer]

I mean use RMB+LMB to lock zoom and RMB+MMB to reset zoom (currently it's vice versa, the same for LMB+RMB and LMB+MMB). It would be more accurately and more intuitive - RMB+wheel to zoom and then just press MMB while still holding RMB (and other finger is on MMB). Lock zoom is not so often used.

This feature is not so old and not many users know about it, so it shoudn't be a problem.

Of course, fully customizable mouse shortcuts would be best.