Hard upstream sync (#6951)

* maps - none of our changes included yet i'll get them in after i finish up the rest of the sync

* sync part 1 - underscore folders in code

* controllers folder

* datums folder

* game folder

* cmon, work

* modules - admin to awaymissions

* cargo to events

* fields to lighting

* mapping > ruins

* rest of the code folder

* rest of the folders in the root directory

* DME

* fixes compiling errors. it compiles so it works

* readds map changes

* fixes dogborg module select

* fixes typo in moduleselect_alternate_icon filepath

code/datums/dna.dm

@@ -1,10 +1,11 @@
+
 /////////////////////////// DNA DATUM
 /datum/dna
 	var/unique_enzymes
 	var/struc_enzymes
 	var/uni_identity
 	var/blood_type
-	var/datum/species/species = new /datum/species/human() //The type of mutant race the player is if applicable (i.e. potato-man)
+	var/datum/species/species = new /datum/species/human //The type of mutant race the player is if applicable (i.e. potato-man)
 	var/list/features = list("FFF") //first value is mutant color
 	var/real_name //Stores the real name of the person who originally got this dna datum. Used primarely for changelings,
 	var/list/mutations = list()   //All mutations are from now on here
@@ -29,7 +30,7 @@
 	previous.Cut()					//^
 
 	return ..()
-	
+
 /datum/dna/proc/transfer_identity(mob/living/carbon/destination, transfer_SE = 0)
 	if(!istype(destination))
 		return