card_fields rewrite and magic-modules.mse-include (#21)

Overhauls the card_fields file to allow for template designers more freedom in manipulating data.

Adds magic-modules.mse-include, a large scale include file for building templates in a standardized way. Applying this to existing frames will be coming in future updates.

data/magic-m15-mainframe-planeswalker.mse-style/style

@@ -79,7 +79,8 @@ init script:
 	}
 	
 	card_shape := {"planeswalker"}
-	
+	card_name_for_level := {if set.alias_as_cardname and card.alias != "" then card.alias else card.name}
+
 	# Is the card a promo card?
 	is_promo := { styling.promo }