[Denemo-devel] added very basic tranpose staff support

[Jeremiah Benham]

I added support for very basic transposition of the staff notes. It can
be found under the staff menu. It is a diatonic transposition at the
moment. Soon I want to add real transposition, as well as measure
transposing and the entire piece. 

There is a problem with it though. The display does not update the
changes. The changes are in memory so when you print you can see the
changes. If you save a reload the files the changes take into effect.
Richard do you know of anyway to fix this? I tried running 
displayhelper(gui) but that did not seem to fix it.

Jeremiah