Audio channel & button fixes — The Kobolds Left Behind Steam update #95769

- Audio SFX Channel added -- now you can control SFX in the audio settings (and SFX will also be properly limited by the overall master volume level, too) - Moved the master audio channel up to the top since it's the one most people will want to configure, and moved the other ones down to 'fine tuning' section - Fix small bug where pressing escape on options would escape twice (all menus now standardized on reacting on Push instead of some on Push/Release)