More menu/highlight things:
* Rename "Default" to "Game type", to make clearer what it's doing.
* Tweak race colouring slightly.
* Put a highlight around the level select icon, and make it consistent with voting.
* Allow setting the highlight colour to affect the intermissions.
* Fix bug with gametype colour getting for record attack.
A handful of skincolour things:
* Rename Turqouise to Aqua, because it resembles one of my fav 2.2 colours with that name.
* Fix incomplete Steel Blue -> Steel rename.
* Merge the very similar Blueberry and Sapphire...
* ... so Sapphire can be backported!
* And Ruby too.
- SPB multiplier depending on 1st-2nd distance
- Removed the Battle-only k_poweritemtimer (hold over from when you could easily get invuln items all of the time), replaced it with a 2 invincibility item cap in ALL modes.
- Spinout is affected by boosters, *properly*
- Can no longer strafe while spinning out on speed bumps
- Messed with how other items interact with speed bumps, again.
- Old bounce code has been ported for non-players
- Fixed Karma players being able to do anything after the round has ended.
- Fixed sneaker and spinout timer weirdness
- Fixed Mines still being hold-use
- Fixed rubber-burn turn not working
- Removed redundant k_spinout and unused k_boosting variables
- Filled out the Color_Opposite table with Kart's new colors. Not really relevant right now (besides some extra Lua functionality) since nothing uses it, but will be nice for if we do the signpost from the sky idea.
