Adds Deathsquad to Quick-Create Antagonist Menu

-Pressing this button will spawn up to 5 death commandos on centcom with a customizable objective
-Added a shuttle console to the ferry that, rather than moving the shuttle, will send a request to admins instead
-Deathsquaddies get an energy shield
-Deathsquad beret will no longer hide head, face, and hair
Update one_click_antag.dm
Made deathsquads traitors to aid in tracking, admin tools, and end-round reporting
Removing duplicate href code
Makes welderbombs use fueltank's ex_act
Fix for 1 use freedom implant
SearchFix - Fixes #4497
Resolved Conflicts:
	_maps/map_files/tgstation.2.1.3.dmm
Redo Map Changes
Merge pull request #4506 from Jordie0608/itsawondernanotrasendoesntreplaceweldingfuelwithsomethinglessvolatile

Makes welderbombs use fueltank's ex_act
Merge pull request #4460 from Ikarrus/deathsquad

Adds Deathsquad to Quick-Create Antagonist Menu
Merge pull request #4514 from Firecage/fix1

Fix for 1 use freedom implant
Merge pull request #4522 from ChuckTheSheep/Search-Fix

SearchFix - Fixes #4497
Resolve Conflicts:
	code/modules/admin/topic.dm