#12 midi monitor window not accepting input when prefs open

[frankie]

* open midi monitor window
* open preferences window (perhaps to use auto scan)
* assume the preferences window obscures midi monitor as happened to me
* try to move the midi monitor window so you can see the data that autoscan is sending
* NOT POSSIBLE.

IMO midi monitor window should always be moveable while the preferences window is open

[Joe Emenaker]

Possibly due to the prefs dialog being modal (and, hence, blocking all other UI interaction). I'll have to look at this after the refactor. Or, if you want to look at it, you can try to see if there are any negative side-effects from making the prefs dialog non-modal.

[frankie]

I'm not going to touch this before 0.21 cos it might take a while to spot any negative consequences