Connie Texture Improvement

This is yopyop's retexture upgrade of the Constituion Class. In this version the textures are augmented by a brighter hull. The Impulse Engines and the glow textures around the Impulse Engines are a nice touch too.
yopyop's Connie texture improvement --------------------------------------------------- changes: -brightened up the hull -added a more cannon saucer -starfleet markings are now "red" and not "bourdeaux" anymore -added impulse-engines -addde