Did a fix for the SHortcutAdaptor doing exceptions
for showing the form before loading all the graphics
but can't really do much about it without adding
background loading to the main form. This is a lot of
work considering we'll be moving from WinForms
to WPF UI in the future.
Also fixed the 'Do you want to save' prompt detection
logic so that it correctly waits until all the loading has
finished before monitoring for users making changes.
Should stop the form incorrectly suggesting you
should save unless they've really made a change.
