added close button to about dialog
added close button to about dialog

VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR,VHAINNOVATIONS/RAPTOR