This series is staying put, for the moment, in its new Thursday time slot, but the shows on either side of it are changing. The Slap, which used to lead off the evening at 8 p.m. ET, now is televised at 10 – while the opening hour of prime time, from tonight on, is devoted to a relocated Dateline NBC. Even so, this is the hour that’s the most rewarding, so stay tuned – and stay put.