Reworks on-mob overlay icon generation. (#8920)

* Porting species equip_adjust from Neb.

* get_species() => get_species_name(), adds correct get_species() impl

* sprite_sheets is now crudely lazylisted.

* Adds returns to add_blood and add_accessories.

* apply_addblends now uses an overlay.

* Renames the various worn overlay procs to be more informative.

* Debugging/refining overlay gen.

* Adding handling for string icon paths.

* Refining/debugging offset overlay gen.

* Getting the offset system working.

* Commenting out Teshari offsets for the time being.

code/datums/datacore.dm

@@ -341,7 +341,7 @@ var/global/list/PDA_Manifest = list()
 		G.fields["p_stat"]		= "Active"
 		G.fields["m_stat"]		= "Stable"
 		G.fields["sex"]			= gender2text(H.gender)
-		G.fields["species"]		= H.get_species()
+		G.fields["species"]		= H.get_species_name()
 		G.fields["home_system"]	= H.home_system
 		G.fields["citizenship"]	= H.citizenship
 		G.fields["faction"]		= H.personal_faction
@@ -387,7 +387,7 @@ var/global/list/PDA_Manifest = list()
 		L.fields["b_dna"]		= H.dna.unique_enzymes
 		L.fields["enzymes"]		= H.dna.SE // Used in respawning
 		L.fields["identity"]	= H.dna.UI // "
-		L.fields["species"]		= H.get_species()
+		L.fields["species"]		= H.get_species_name()
 		L.fields["home_system"]	= H.home_system
 		L.fields["citizenship"]	= H.citizenship
 		L.fields["faction"]		= H.personal_faction

code/datums/uplink/announcements.dm

@@ -72,7 +72,7 @@
 		general.fields["name"] = user.real_name
 		general.fields["sex"] = capitalize(user.gender)
 
-	general.fields["species"] = user.get_species()
+	general.fields["species"] = user.get_species_name()
 	var/datum/data/record/medical = data_core.CreateMedicalRecord(general.fields["name"], general.fields["id"])
 	data_core.CreateSecurityRecord(general.fields["name"], general.fields["id"])
 
@@ -112,4 +112,3 @@
 	var/datum/event_meta/EM = new(EVENT_LEVEL_MUNDANE, "Fake Radiation Storm", add_to_queue = 0)
 	new/datum/event/radiation_storm/syndicate(EM)
 	return 1
-