Dancing with every Gossip is within reach again

🐛 Bug Fix: Anthony and Abigail barely showed up to dance, so their achievements were stuck. The five Gossips step in to keep quiet dance rooms moving, but they were seated in a fixed order that usually ran out before it reached Anthony and Abigail. The two of them only turned up reliably in the Grand Ballroom, which not everyone could get onto, so most people could never get paired with them. They now spread evenly across all the dance rooms, so you can dance with each Gossip and finish the set.

The Grand Ballroom also has a higher limit, and rotates folks out faster. I'm going to increase the pace of dances in the Grand Ballroom too, to make sure everyone at least gets a few before being rotated out.