Another Friday, another demo win for Fox’s Last Man Standing, as back-to-back episodes dominated the demo ratings shares, scoring a 1.1/6 and 6.12 million viewers at 8 PM, then staying strong with a 1.0/5 and 5.63 million at 8:30 PM But the twin knockouts didn’t particularly help Fox’s new legal drama Proven Innocent, which debuted to an 0.5/3 and 3.09 million at 9 PM, going up against tough competition elsewhere. On CBS, the debut of Levy Tran as a new character on MacGyv…