Fix Gay Island Issues

This fixes #1500

Items changed:
* Given all platforms a drop property, making sure player can't drop down if it'll kill them
* Removed the red direction arrows
* Fixed tileset for Rainbow Bar - removed stray pixels & rearranged it
* Change arrow over door in Rainbow Bar to standard size
* Prevent jumping through ceiling in Rainbow Bar
* Stop spikes from killing you if standing on the platforms
* Shorted the length of the second moving cloud so it didn't interact with the one which goes up & push you to your death
* Lowered the ceiling & the moving platform over the spikes - if the ceiling is higher, due to the reduced b-box size the players fit under it, and if I didn't lower the moving platform players wouldn't fit under it crouched.