Polygon/Polyline should be Resizeable

-> todo: Recalculate the Points when Polyline is stretched

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/LineExtensionBase.cs

@@ -186,8 +186,8 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 
 		protected void ResetWidthHeightProperties()
 		{
-			ExtendedItem.Properties.GetProperty(FrameworkElement.HeightProperty).Reset();
-			ExtendedItem.Properties.GetProperty(FrameworkElement.WidthProperty).Reset();
+//			ExtendedItem.Properties.GetProperty(FrameworkElement.HeightProperty).Reset();
+//			ExtendedItem.Properties.GetProperty(FrameworkElement.WidthProperty).Reset();
 		}
 	}
 }

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/PolyLineHandlerExtension.cs

@@ -38,8 +38,8 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 	/// <summary>
 	/// Description of PolyLineHandlerExtension.
 	/// </summary>
-	[ExtensionFor(typeof(Polyline), OverrideExtensions = new Type[] { typeof(ResizeThumbExtension), typeof(QuickOperationMenuExtension), })]
-	[ExtensionFor(typeof(Polygon), OverrideExtensions = new Type[] { typeof(ResizeThumbExtension), typeof(QuickOperationMenuExtension), })]
+	[ExtensionFor(typeof(Polyline))]
+	[ExtensionFor(typeof(Polygon))]
 	internal class PolyLineHandlerExtension : LineExtensionBase, IKeyDown, IKeyUp
 	{
 		private readonly Dictionary<int, Bounds> _selectedThumbs = new Dictionary<int, Bounds>();