Bridget Christie | John Robins | Will FrankenBridget Christie is probably much too modest to claim to be the godmother of a comedy movement, but she is. While she's far from the first to put feminist politics at the core of her stand-up (it's a tradition that stretches back to the dawn of alternative comedy in this country), it's her sheer success that has arguably given performers such as Sara Pascoe and Grainne Mag…