Removed old GUI files.
Commented out or removed ButtonGUI code
Removed ButtonGUI-related files.
Added MenuManager class and updated the makefile accordingly.
Updated resources_d.cfg with what will be the new location for layout xmls.
Got a working main menu, woooo! Also fixed the makefile and added some MyGUI resources for now.
Almost got single player startup working.
Got station selection working.
Added fighter pilot cockpit in new UI system.  Only works in one resolution, so it needs work, but OK for now.
The mini screen now works again (though it doesn't actually fit in the UI... Yet.