Abling Disability (#4485)

This PR implements a system for manipulating a client's color safely and also ports a prioritization system for sorting client color from /tg/. Currently this PR also implements client coloration in the form of color blindness, namely:
Monochromacy
Deuteranopia
Tritanopia
Protanopia

DTP are mild brain traumas, whereas monocrhomacy is a severe brain trauma.
Furthermore, this PR removes the Needs Glasses prompt in character creation, and replaces it with a disability selector, allowing people to more closely refine their special little snowflakes.
Current disabilities available:
Nervousness
Nearsightedness
Deuteranopia
Tritanopia
Protanopia
Deafness
Muteness

code/modules/mob/abstract/new_player/character_traits.dm

@@ -0,0 +1,57 @@
+//Character trait system. Currently geared only for disabilities but a refactor to make it trait neutral would be trivial.
+
+/datum/character_disabilities
+	var/name = "Enigma"
+	var/desc = "This trait was not meant to be seen by mortal minds."
+
+/datum/character_disabilities/proc/apply_self(var/mob/living/carbon/human/H)
+	return
+
+/datum/character_disabilities/nearsighted
+	name = "Nearsightedness"
+	desc = "Without prescription glasses your vision is impaired."
+
+/datum/character_disabilities/nearsighted/apply_self(var/mob/living/carbon/human/H)
+	H.disabilities |= NEARSIGHTED
+
+/datum/character_disabilities/nervous
+	name = "Nervousness"
+	desc = "You are prone to stuttering and bouts of anxiety."
+
+/datum/character_disabilities/nervous/apply_self(var/mob/living/carbon/human/H)
+	H.disabilities |= NERVOUS
+
+/datum/character_disabilities/deuteranomaly
+	name = "Deuteranopia"
+	desc = "You have difficulty perceiving green."
+
+/datum/character_disabilities/deuteranomaly/apply_self(var/mob/living/carbon/human/H)
+	H.add_client_color(/datum/client_color/deuteranopia)
+
+/datum/character_disabilities/protanopia
+	name = "Protanopia"
+	desc = "You have difficulty perceiving red."
+
+/datum/character_disabilities/protanopia/apply_self(var/mob/living/carbon/human/H)
+	H.add_client_color(/datum/client_color/protanopia)
+
+/datum/character_disabilities/tritanopia
+	name = "Tritanopia"
+	desc = "You have difficulty perceiving green and yellow."
+
+/datum/character_disabilities/tritanopia/apply_self(var/mob/living/carbon/human/H)
+	H.add_client_color(/datum/client_color/tritanopia)
+
+/datum/character_disabilities/mute
+	name = "Muteness"
+	desc = "You are unable to form coherent speech."
+
+/datum/character_disabilities/mute/apply_self(var/mob/living/carbon/human/H)
+	H.sdisabilities |= MUTE
+
+/datum/character_disabilities/deaf
+	name = "Deafness"
+	desc = "You are unable to percieve sound."
+
+/datum/character_disabilities/deaf/apply_self(var/mob/living/carbon/human/H)
+	H.sdisabilities |= DEAF