By GARY WEST Age was the theme of the evening — achieving in spite of it, overcoming it, not disregarding it, but embracing it as a virtue. Yes, that was the theme for Bobby Bragan’s birthday party at the Omni Fort Worth Hotel.The doyen of managing turned 92 Friday, and he celebrated at the Bobby Bragan Youth Foundation Gala, tossing out stories as if they were Mardi Gras beads, including the one about being not just the oldest manager of a professional team but the oldest manager ever to be ejected from a game.Since 1991, the foundation has awarded $1,182,500 in scholarships to eighth-graders.