On the heels of a razor-thin loss in his re-election bid, Assm. Howard Watts (D-Las Vegas) told The Nevada Independent he doesn't regret anything — including actions he took in his leadership roles that alienated unions, NV Energy and other special interest groups and potentially contributed to his defeat. Watts, 38, was seeking his fifth term representing Assembly District 15 but lost in the June 9 primary to Miguel Dávila, 34. Winning by fewer…