Make badge retry transmutation on failure, instead of eating badges and not doing anything

badge.py

@@ -100,6 +100,11 @@ class BadgePopulation:
 			else:
 				out=L
 		possible_out = [badge_name for badge_name in rarities if rarities[badge_name][2]==out]
+		if len(possible_out)==0:
+			# refund and try again
+			for badge in badge_names:
+				self.give_badge(user,badge)
+			return self.transmute(user,*badge_names)
 		return _random.choice(possible_out)
 	def to_json(self):
 		items = [list(x) for x in self.badges.items()]