Sign and label requirements modified.

This bill modifies requirements for signs and labels at gas stations in Minnesota. It updates the text on gas tax signs to reflect current tax amounts and removes penalties for missing or damaged signs. The bill also clarifies labeling rules for ethanol-blended fuel, specifying how dispensers should be marked for different fuel types and removing a requirement for "FLEX-FUEL VEHICLES ONLY" labels. These changes directly affect retail petroleum dispensers and fuel station operators.