Fiery Explosions! - And some wizard tweaks

Adds a new arguement for explosion(), flame_range, which calls fire_act() for the contents of the turf in that range, and also spawns hotspots (mostly for ambience, but it does also make it a little dangerous right after the explosion)

flame_range added to Syndiebombs, Syndieminibombs, Fuel tank explosions, Wizard Fireballs, and meteors.
flame_range prompt added to the admin VV menu

ExtinguishMob() added to Ethereal Jaunt to make wizards a bit more protected from fire
Added firesuit level heat protection to the wizard rig, to protect wizards who set themselves on fire with their fireballs, should they choose to obtain it.

Here's a video: http://www.youtube.com/watch?v=pJW-N0AbiFE&feature=youtu.be