SPOILER ALERT: This story contains spoilers from the Tuesday, Oct. 14 episode of “ Dancing With the Stars .” It was the most emotional night yet on Season 34 of “Dancing With the Stars.” For dedication night, each of the ten remaining couples performed a number to honor someone special in their life — which meant multiple reunions during the evening. It also meant a special returning guest — former pro Kym Johnson returned to the ballroom as a guest judge. Keanu Reeves Remembers Diane Keaton as