make UMap gui color class-dependant
u_doneAction should be init mode
make u_mapbus ir rate

so that re-triggering during playback doesn't cause problems with the
already playing nodes
fix issue with \n_go being missed when calling cmd-.

if the event was scheduled for playback after the cmd-. was hit it will
receive a \n_end but not an \n_go.
test fix for memory leak problem

don't store a Server in the UChain, as it will get copied with
deepCopy, causing issues with the GC engine.
include TempoMap when copying scores/folders
adding UPat