Columbia Falls planning commissioners late Wednesday night unanimously approved a series of three measures to begin clearing a path for the development of Teakettle Heights — a 421-unit subdivision on former Columbia Falls Aluminum Co. (CFAC) land being backed by local developer, Mick Ruis. The decision came in the face of a city council chamber full of impassioned, frustrated residents, several of whom left the room as the affirmative votes wer…