mount old location of screens if possible

This still won't work on iOS, but should degrade gracefully.

0011-on.initialize

@@ -1,5 +1,8 @@
 on.initialize = function()
 	love.filesystem.createDirectory(Directory)
+	pcall(function()
+		nativefs.mount(Legacy_directory, Directory)
+	end)
 	populate_missing_handlers()
 	Font = love.graphics.newFont(Font_height)
 	love.graphics.setFont(Font)
@@ -15,4 +18,4 @@ on.initialize = function()
 	end
 	Current_pane_index = 1
 	Current_pane = Panes[Current_pane_index]
-end
+end

0153-Legacy_directory

@@ -0,0 +1 @@
+Legacy_directory = love.filesystem.getSourceBaseDirectory()..'/carousel_data/'