[MU4 Issue] The staff preview in the drum-map editor should have the same amount of staff-lines as the actual staff

[oMrSmith]

I find the drum map editor pretty hard to understand.

The most confusing part is that the number of staff-lines doesn't mach.

At least the staff-lines, which are not present in the actual staff, should be greyed out (or thinner) in the preview, I think. This would make obvious, what's actually going on.

In general, I would find it easier to first select a line and then assign the midi-note via keyboard when creating a new entry in the drum map.