Event/Midsummer: improve pole ribbon functionality:
- Bunny creature should hover, which puts it in the intended position.
- Use correct visual and internal spells to handle cosmetics and timers.
(cherry picked from commit 03b15d968b56b7855693e47e79a320cf9990d73c)
Rename 9999_99_99_99_world.sql to 2016_07_05_03_world.sql
(cherry picked from commit 8edc1caf32635f417aee290811a9ef2860f145b6)