The Colorado Senate gaveled in Thursday morning and quickly gave final approval to a much-heralded property tax deal, ending a special session aimed at stopping a pair of ballot initiatives that would enact deeper cuts. The legislation now goes to Gov. Jared Polis for his signature — and is expected to prompt the conservative and business backers of initiatives 50 and 108 to withdraw them from the ballot. The Senate approved the compromise bill, House Bill 1001, handily on a 30-4 vote on the special session’s fourth day.