* Fix for hotkeys not allowing repeats.
Re-arrange on the main menu screen code.
Added virtual to GPEvent destructors to make sure we are calling all the way up the chain.
* Lock-up fixes, new/delete was happening while the update() function was being called by display
Some code clean-ups, moved all of the gpscreen destructors to virtual so we do not have to switch() the delete function.
Moved some init functions around so we always call init() first
* Add ability to exit menu with pin-based menu toggle. Fix rapid-press of menu toggle
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