Add new chemicals (#5168)

Adds new drugs:
-Red Nightshade: a drug that induce a berserk-like status, you see only red, can smash windows, stuns go away slower and etc
-Paxazide: a medicine that induces pacifism on the target, like the mutation
-Spectrocybin: a hallucinogenic that has a small chance of giving a glipse of the other hidden to mere mortals, can be found in a mushroom variety

Adds a new secret chem:
-Bottled Lightning: causes a tesla zap when in contact with someone's blood or when splashed on the ground

Also removes some broken/unused plants.

code/modules/client/client_color.dm

@@ -68,4 +68,8 @@
 
 /datum/client_color/tritanopia
 	client_color = list(0.95,0.07,0, 0,0.44,0.52, 0.05,0.49,0.48)
+	priority = 100
+
+/datum/client_color/berserk
+	client_color = "#AF111C"
 	priority = 100