* Multiplied rain speed by 3, per Oni's request.
* Disable weather density - force to 1 if weather draw distance, otherwise zero
* Move the ceilingpic check into a more convenient part of the weather spawning loop.
* `drawdist_precip_cons_t` - replaces "Infinite" with "None".
* Disable the lowest normal draw distance (256), given... both kart and srb2 are basically unplayable like that.
* Disable cv_drawdist_nights entirely.
Also: temporarily cleaned up the M_CanShowLevelInList record attack conditions to automatically match what we want, instead of requiring us to apply a bunch of vanilla flags just to emulate our "available unless explicitly hidden" MP mechanism like is currently in maps.kart.
You can now remap Change Viewpoint, Screenshot, and Toggle GIF Recording to other keys, mainly for gamepads
They also pushed me to my breaking point and I couldn't tolerate the control menu anymore, thanks to toaster for the scrolling backport
* S_Init -> S_InitSfxChannels because it did mostly SFX anyway
* S_MusicPlaying, S_MusicPaused, S_MusicName, S_MusicExists new status methods
* I_MusicPlaying, I_MusicPaused
(cherry picked from commit f5f0b5e76c2fd405c8cc895dde653c5ed2652622)
* Add `kartvoterulechanges`, or "Voting Rule Changes" on the menu, to allow some user control over event frequency.
* "Never" - does what it says on the tin.
* "Sometimes" - 1/8 chance of Encore if host has unlocked it, only gametype change when buffer is full
* "Frequent" - 1/2 chance of Encore if host has unlocked it, gametype change every 5 maps
* "Always" - If host has unlocked Encore, alternates between Encore and Gametype. Otherwise, always a gametype change
* There's probably room for a setting between "Sometimes" and "Frequent", but I didn't want to overload the host with options and these were the ones that made sense.
* Better handling of buffer refreshes, to prevent two of the same map appearing next to each other in the voting unless there literally aren't that many maps.
* Mostly unrelated: Minor bugfix for Y_SetupVoteFinish, preventing music changes/random sounds playing on the You Will Join Next Race screen. (Branch-appropriate, at least.)
* Some visual ordering fixes for the item menu, plus a #define-toggleable option for the bottom right slot to be traversable for ease-of-use purposes (even if it doesn't do anything).
