ThinkProgress: Two measures that would limit oil and gas development in Colorado just cleared a massive, highly contested hurdle toward getting on the ballot in November. A group of environmental and community organizations submitted the requisite 196,984 signatures??and then some??to the Colorado Secretary of State on Monday, sources said. The signatures would allow initiatives 75, which would authorize towns and cities to regulate fracking, and 78, which would create mandatory setbacks for oil and gas development,...