GuiAutoImport: run HUD_run_me instead of HUD_main
HUD_main: Add HUD_removed() function, called by HUD when an individual HUD is closed, eliminates polling them every update; use 'in' operator instead of has_key
HUD: clean up code that deals with lack of font descriptor in config, and notification of what font was selected
HUD: clean up unnecessary use of keys() functions, and 'in' vs has_key
HUD: restore previous definition of reposition_windows(), although i can't make it error at will anymore
Tables: cleanup with keys() and in operator
fpdb: no longer raise an error on duplicate tab, since we currently depend on that, it's not an error, right?
