Over the weekend, Missouri Attorney General Josh Hawley attempted to elbow in on the unrest in St. Louis, sending a letter to the city's circuit attorney outlining the laws against rioting — and offering his assistance in prosecuting such cases.But this morning, St. Louis Circuit Attorney Kim Gardner gave it right back to him. In a press release, the city's top prosecutor said she's sent a letter of her own, this one to Missouri's governor asking for a solution for the mess created by the influx of thousands of traffic tickets issued to St. Louis motorists by the state's highway patrol.…