Fixed /proc/select_active_ai_with_fewest_borgs()
Fixes fix
Incendiary shotgun shells are now dragonbreath shells.
Adds meteorshot.
Advanced Shotshells

adds 3 new types of shotgun ammo. make them by crafting the special shell in RND, and then using table-crafting to make the unique ammo.dmi

meteorshot, made with compressed matter cartridges
pulse slugs, shotgun rounds with the properties of a laser weapon.
dragonsbreath rounds, area-of-effect flame weapons.
renames ammunition/bullets.dm to ammunition/ammo_casings.dm, which is more accurate

splits RND designs up into their own files
absolute paths for kitchen and bar stuff
absolute paths for the structure folder files

Conflicts:
	code/game/objects/structures/crates_lockers/closets/secure/cargo.dm
3 absolute pathing files
Absolute paths for the files in the ATMOSPHERICS folder
Absolute paths for the files in the Controllers folder
absolute paths for files in _HELPERS folder and one file in _onclick folder
Absolute paths for files in the datums folder
Absolute paths for files in the defines folder
Absolute paths for files in the mob folder
Merge branch 'master' of https://github.com/tgstation/-tg-station.git into mobabsolutes
Merge pull request #4462 from Firecage/ATMOSPHERICSabsolute

Absolute paths for the files in the ATMOSPHERICS folder
Merge pull request #4463 from Firecage/Controllerabsolutes

Absolute paths for the files in the Controllers folder
Merge pull request #4464 from Firecage/helperonclickabsolutes

absolute paths for files in _HELPERS folder and 1 file in _onclick folder
Merge pull request #4465 from Firecage/datumsabsolutes

Absolute paths for files in the datums folder
Merge pull request #4466 from Firecage/definesabsolutes

Absolute paths for files in the defines folder
Merge pull request #4451 from Firecage/structureabsolutes

absolute paths for the structure folder files