much faster layout calculation

modules/console/console.otui

@@ -1,7 +1,7 @@
 ConsoleLabel < UILabel
   font: terminus-14px-bold
   height: 16
-  anchors.bottom: next.top
+  anchors.bottom: commandBox.top
   anchors.left: parent.left
   anchors.right: parent.right
   margin.left: 2
@@ -13,6 +13,7 @@ RectPanel
   anchors.fill: parent
 
   UILabel
+    id: commandSymbolLabel
     size: 18 20
     anchors.bottom: parent.bottom
     anchors.left: parent.left
@@ -32,4 +33,4 @@ RectPanel
       function(self)
         Console.executeCommand(self:getText())
         self:clearText()
-      end
+      end