Removed some unused variables in mob definitions:
mob/living/carbon/var/antibodies
mob/var/poll_answer

Replaced some instances of 0.0 with 0.
 * Made the lobby pre-game countdown timer a configuration option.
 * Changed the default value to 120, to compensate for BYOND adverts and round restarts closing the client or kicking you randomly.
Fix for airlocks having power when all the wires were cut. Someone overrided an If statement for when the backup wires are cut.
new_player href sanitization

Prevents players from modifying another player's preferences and
character setup.
Fixes various runtimes

Runtimes created when trying to apply radiation to a mob destroyed by
monkeyizing, trying to add different components to lists of salvage,
attacking non-carbon mobs with lighters, and blending monkies in the
food processor.
Changed a Fix

Just making a list is good enough to prevent the runtime.
Fixes monkeyVsFoodProcessor properly - blood buckets are now created with dna.
Removes unused code in /obj/structure/mecha_wreckage/gygax/New()
Merge pull request #831 from Aranclanos/AirlockPower

Airlock power bugfix
Merge pull request #824 from Giacomand/config_countdown

Made the lobby pre-game countdown timer a configuration option.
Merge pull request #836 from Zelacks/hrefpreffix

New player option screen href exploit fix
Merge pull request #835 from Carn/mob_defines

Removed some unused variables in mob definitions:
#821 Incorrect plaque tile gas values

This corrects the commemorative Goon plaque at the Arrivals Shuttle. It previously had the values of gas set low and an approximation of what the values should be. The temperature was also extremely low. This pull sets the values to the default of the other floor tiles.

Arrivals will become cold randomly, but not every round. The epicenter of this coldness is the plaque (thanks to dumpdavid for helping us figure it out). It is a map edited floor tile, it is the exact same as every other tile except it has its values edited on the map.

I am not sure if this will fix arrivals getting cold, but the values of the tile are an anomaly and should be reverted to the default values.

Map-merger died. Had to merge by hand.
Code by Zelacks