By Hunter Hodies Longtime Pittsburgh Steelers general manager Kevin Colbert has officially called it a career. The NFL Draft was his last order of business before retiring and handing the keys to someone else. He oversaw all of the Steelers’ draft picks this year. Colbert had been with the team since 2000 and is considered one of the best general managers in modern NFL history. During his reign, the Steelers had just one losing season, made the playoffs 14 times, won the AFC North 10 times, and won two Super Bowls. Whoever replaces Colbert is going to have massive shoes to fill, to say the lea…