-tg- underware overhaul

This commit overhauls the underwear/undershirt system to -tg-'s text-based
version. No more magic numbers, just text states.

Note, this modifies the SQL Schema, and existing databases must be
modified by the following SQL:

ALTER TABLE server_db.characters
	CHANGE underwear underwear MEDIUMTEXT NOT NULL,
	CHANGE undershirt undershirt MEDIUMTEXT NOT NULL;

code/game/dna/dna.dm

@@ -74,7 +74,7 @@
 	//Hair
 	var/hair	= 0
 	if(!character.h_style)
-		character.h_style = "Bald"
+		character.h_style = random_hair_style(character.gender)
 
 	var/hrange = round(4095 / hair_styles_list.len)
 	var/index = hair_styles_list.Find(character.h_style)
@@ -84,7 +84,7 @@
 	//Facial Hair
 	var/beard	= 0
 	if(!character.f_style)
-		character.f_style = "Shaved"
+		character.f_style = random_facial_hair_style(character.gender)
 
 	var/f_hrange = round(4095 / facial_hair_styles_list.len)
 	index = facial_hair_styles_list.Find(character.f_style)