should we clone controls in Viewer::initMapPanel?

[bartvde]

Currently it is passed straight to OpenLayers and controls are added to the initial array provided.

It seems there are serialization issues with controls in any case, does it make sense to delete them from initialConfig?

                controls: mapConfig.controls ? mapConfig.controls.slice(0) : [
                    new OpenLayers.Control.Navigation({
                        zoomWheelOptions: {interval: 250},
                        dragPanOptions: {enableKinetic: true}
                    }),
                    new OpenLayers.Control.PanPanel(),
                    new OpenLayers.Control.ZoomPanel(),
                    new OpenLayers.Control.Attribution()
                ],