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.mse-game/stamps/menu_choice_images

@@ -0,0 +1,16 @@
+choice images:
+	none:						/magic.mse-game/stamps/none.png
+	standard:					/magic.mse-game/stamps/oval.png
+	acorn:						/magic.mse-game/stamps/acorn.png
+	heart:						/magic.mse-game/stamps/heart.png
+	universes beyond:			/magic.mse-game/stamps/ub.png
+	alchemy:					/magic.mse-game/stamps/alchemy.png
+	alchemy old:				/magic.mse-game/stamps/alchemy_old.png
+	custom:						{ custom_stamp() }
+	flatstamped standard:			/magic.mse-game/stamps/flat_oval.png
+	flatstamped acorn:				/magic.mse-game/stamps/flat_acorn.png
+	flatstamped heart:				/magic.mse-game/stamps/flat_heart.png
+	flatstamped universes beyond:	/magic.mse-game/stamps/flat_ub.png
+	flatstamped alchemy:			/magic.mse-game/stamps/flat_alchemy.png
+	flatstamped alchemy old:		/magic.mse-game/stamps/flat_alchemy_old.png
+	flatstamped custom:				{ custom_stamp() }