Mammoth commit!

* Make TIME part of HUD count down in a bunch of circumstances where it was otherwise some other seperate thing.
* Make race countdown happen in a bunch of appropriate circumstances.
* Refactor race countdown.
* Remove a lot of useless stuff from H&S/Tag UI.
* Make co-op/competition/race end-of-act countdown use the race countdown and bigger HUD font.
* Remove useless PLAYING/SPECTATE text from lives element.
* Merge lap counter into lives element.
* Move some other text around.