Working on score display panel and score edit view simultaneously (to releave boredom really).

Edit view is more urgent really, but I'm not quite sure what it'll need yet. Score properties are a good start, but might warrant their own tab or something. I'll start with the score display (and associated page turn/display functions) and play/pause/stop/start stuff.

Installed MS Enterprise Library for logging.

Added action wrapper with exception handling and logging.

Need to tidy up MainVM and events.