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-dfc.mse-style/style

@@ -4,7 +4,7 @@ short name: Mainframe DFC
 full name: M15 DFCs
 installer group: magic/m15 style/double-faced cards
 icon: card-sample.png
-position hint: 060
+position hint: 005
 
 version: 2020-09-04
 depends on:
@@ -3236,6 +3236,13 @@ extra card field:
 	include file: /magic-pride.mse-include/pins
 	save value: true
 	editable: true
+extra card field:
+	type: choice
+	name: list icon
+	choice: no icon
+	choice: the list
+	save value: true
+	editable: true
 extra card style:
 	pt 2 copy:
 		z index: 4
@@ -4727,3 +4734,12 @@ extra card style:
 		popup style: in place
 		mask: {"/magic-pride.mse-include/masks/" + if back_four_abilities() then "4planeswalker.png" else if mainframe_walkerb() then "planeswalker.png" else if back_legend() then "m15 legend.png" else "m15.png"}
 		image: {pin_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