Literally pop your license plate lights out (rear) and hook up another car battery + to + and - to -, this will act like a battery in parallel with the whole car, allowing for you to unlock the doors. This is just a remedy to a dead battery, not fixing yoru problem. Check your trunk harness. The lock popping up is a sign that a wire in your trunk harness is SPLIT. Follow the the left side trunk hinge back until you see the big hunk of wiring, fix all your split wires... i bet one is grounding out, draining your battery.