Add DK Japan version support
Add setting SHOW_SPLASHSCREEN on start of frontend
Improved performance launching emulator on Raspberry Pi using Window Management. It's much quicker to launch MAME in a window then switch the window to fullscreen.
Add settings EMU_ENTER and EMU_EXIT to specify optional commands to run before and after entering the emulator. Some defaults were provided for Raspberry Pi.
Set Jumpman's status to "Not ready to play" when game is paused
Fix some bugs with overwriting text because Pauline had too much to say.