Refactors the code to work with BYOND 500.  Big commit.

Var changes:
* /obj/item/var/color is now item_color
* /obj/machinery/portable_atmospherics/canister/var/color is now canister_color
* /obj/machinery/atmospherics/var/color is now pipe_color
* /mob/living/simple_animal/mouse/var/color is now body_color
* /mob/living/simple_animal/chicken/var/color is now body_color

Proc changes:
* /obj/machinery/door/proc/animate() is now do_animate()
* /obj/machinery/transformer/proc/transform() is now do_transform()

Map changes are due to pipe instances being changed from color to pipe_color

Signed-off-by: Mloc-Argent <colmohici@gmail.com>
Updated MetaStation.v37F.dmm to MetaStation.v37G..dmm
-Added a pet lizard to the HoS' office.
-Added slightly more starting energy to the SMES cells.
-Added welding supplies to atmos.
-Added emergency showers to atmos, toxins, medbay and chemistry.
-Added auxiliary escape airlock to maint. between escape and xenobiology.
-Added vice-officer and mailman jumpsuits in a wall somewhere.
-Added costume vendor to somewhere in maintenance.
-Re-added missing CMO locker.
-Removed all but one normal non-synthetic flash from robotics.
-Replaced Stetchkin in the armoury with a Desert Eagle.
-Fixed library study access levels.
-Fixed donut box on the emergency shuttle being empty.
-Fixed Research EM Storage access level, it is now Research Access, as intended.
-Fixed mining shuttle space-bridge button being the wrong access level, it's now mining, as intended.
-Moved costume room rack to give more space around the vendor.
Fixed pipes on the "Spacehotel" away mission map for new var names.

Signed-off-by: Mloc-Argent <colmohici@gmail.com>
Updated MetaStation.v37G..dmm to MetaStation.v37G.II.dmm
-Pipe instances switched from defining 'color' to 'pipe_colour'
-Thus the map runs on BYOND 500
Merge pull request #1517 from Mloc/tg-byond500

[MAP] Refactors the code to work with BYOND 500.  Big commit.
Merge pull request #1522 from Metacide/master

Updated MetaStation.v37F.dmm to MetaStation.v37G..dmm