In a scenario something like the lead-up to a high school prom, Donald Trump and the billionaire businessmen and political activist Koch brothers are trading barbs as to who jilted the other for a potential date in Colorado. Charles and David Koch of Wichita, Kansas-based Koch Industries, the fat-cat moneybags behind many conservative causes and candidates, kicked off a three-day summit Saturday at Denver investor Philip Anschutz's Broadmoor resort in Colorado Springs for some 400 right-wing donors…