The List and cleanup

Add The List icon to Old, OldAbu, New, New Planeswalkers, New Conspiracy, M15, M15 Planeswalkers, and Mainframes M15, Adventure, Planeswalker, and DFC
Cleaned up magic-mainframe-extras
Cleaned up some position hints

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

@@ -1085,6 +1085,13 @@ extra card field:
 	script: card.card_color
 	save value: false
 	editable: false
+extra card field:
+	type: choice
+	name: list icon
+	choice: no icon
+	choice: the list
+	save value: true
+	editable: true
 extra card style:
 	card code:
 		left: 24
@@ -1528,4 +1535,13 @@ extra card style:
 		z index: 2
 		image: {if has_four_abilities() then card_background4() else card_background3()}
 		visible: {is_adventure()}
-		render style: image
+		render style: image
+	list icon:
+		left: 0
+		top: 487
+		width: 29
+		height: 36
+		render style: image
+		choice images:
+			the list: /magic-mainframe-extras.mse-include/mfsfiles/list.png
+		z index: 4