Changelog: * Allow configuring most important options from the menu (Amiga models etc) * Fix Nunchuk/Classic controller conflict * Add virtual keyboard to set keyboard-to-controller-button bindings * Store configuration when modified in the menu and allow uaerc.user to override the configuration * Saving and restoring states now work * Harddisk support is now built in, but works so-so (and has no menu support) * Hundreds of small fixes here and there