SPRINGFIELD — Illinois Comptroller Susana Mendoza is pushing legislation that would require the state to make automatic deposits into its so-called “rainy day fund” whenever certain financial conditions are met.Officially known as the Budget Stabilization Fund, it was created in 2001 as a reserve so the state could pay its bills in a timely manner, especially during regular months of the year when revenues are lower than other months. The goal was to maintain a reserve fund equal to 5 percent of the state …