Merge pull request #10172 from Ghommie/Ghommie-cit460

Porting several quirks code updates.

code/modules/mob/living/carbon/human/human.dm

@@ -858,6 +858,7 @@
 	.["Make slime"] = "?_src_=vars;[HrefToken()];makeslime=[REF(src)]"
 	.["Toggle Purrbation"] = "?_src_=vars;[HrefToken()];purrbation=[REF(src)]"
 	.["Copy outfit"] = "?_src_=vars;[HrefToken()];copyoutfit=[REF(src)]"
+	.["Add/Remove Quirks"] = "?_src_=vars;[HrefToken()];modquirks=[REF(src)]"
 
 /mob/living/carbon/human/MouseDrop_T(mob/living/target, mob/living/user)
 	if(pulling == target && grab_state >= GRAB_AGGRESSIVE && stat == CONSCIOUS)