Extended CssLayout that enables user to resize the layout by using drag and drop from all the corners and sides. Basic features: - Toggle resize mode on/off - Server side events from resize start, end and cancel (by user) - Automatically checks for resize boundaries from parent (can't resize outside parent) - Automatically updates position when inside an AbsoluteLayout - Set the size of the resize area in pixels - Toggle automatic resize accept on client side on/off - Cancel resize on server side when ResizeEndEvent fired and not on automatic resize accept mode - Keep current aspect ratio when resizing - User can cancel the resize any time using Esc key