Overhaul DataItemChanged to allow more robust tracking
Fix padDynamics not being present beyond Bass pad
Drop noisy unneeded diagnostics
"Function" calls just for side effects should have () appended
The container will signal a DataItemChanged for itself; the imported content should just be dirty
Listen to currentAllMemory and flag up any change in the title bar
Make Pad take on more responsibility and refactor more in line with other bound components
Have exitClose try to be clever...