fix for
issue #840: Basic Training - Grenade is failing to dismiss team
expose FlightTime to lua, disable in-air flame harming moving hogs ☹ aaaand override that in ClimbHome ☺
don't forbid running regular chat commands during turns of other teams. that was probably only meant for emotes to begin with
delay cake boom until it has walked a little bit. also fix accidental drowning of watergods in last commit
add a half-second flighttime delay to flamethrower flames so they can leave the "barrel" of the flamethrower without burning the hog