* Fewer companies beating earnings views -- TR data * Cognizant Tech shares drop after cutting outlook * DigitalGlobe rejects takeover offer from GeoEye * Futures off: Dow 56 pts, S&P 6.7 pts, Nasdaq 10.5 pts By Ryan Vlastelica NEW YORK, May 7 (Reuters) - U.S. stock index futures fell on Monday as elections in France and Greece stirred up new uncertainties about how the region will tackle its ongoing debt crisis. Investors also were still digesting Friday's weaker-than