* Center level selection.
* Re-work Record Attack screen.
* Re-order MP Main menu, hide in NONET.
* Combined yeeeah on vote screen.
* Colour gametype on tab and tally.
* (unrelated) Don't show "CHECK" if exiting.
* Defer the change until you're actually modifying the map, in service of the following.
* Reset score.
* Call that gametype change function.
* Collary of the above: Don't reset score if you're `map mapxx`ing in the console, unless it's `force`'d.
* Fix the basic, obvious issues that'd prevent us shipping with the new level title system.
* Correct the non-green resolution support, which was ALMOST there but which I accidentially fucked up one of the signs on.
* Adjust the subttl position if it'd get overwritten.
* Draw the gametype with the subttl.
* Adjust the gametype constants for easier gametype_cons_t array access.
Should make it a lot easier to add more gametypes later.
Also some minor fixes:
- Changed up how shell speed scales in mobjscale juuuust slightly, so
it's less messy
- Fixed CHECK showing spectators
- Record Attack replays now save best lap time
- Removed instances of NiGHTS Attack
- Removed a lot of unlockable that have no use in Kart (ultimate mode,
perfect bonus, score emblems, etc)
- Removed all methods of activating ultimate mode
-If the server tries to kick a joiner who is downloading the game state, they will get a timeout instead, because a regular kick would only happen once the game state has been downloaded
-Added a timeout for player ticcmd packets, again to prevent freezes to happen in some cases
-File/game state downloading is now faster, the speed is controlled by the "downloadspeed" cvar, in packets per tic
-The reason is now properly shown when the server refuses connection
-Changed the default values of "nettimeout" to 10 seconds (previously 15) and "maxsend" to 4 MB (previously 1)
-Added a "noticedownload" cvar that displays a message in the server console when someone is downloading a file
