Minor changes, bug fixes.

Hi everyone! I worked a little bit on this map, and I change some major things, wich, I hope, will work perfectly!
That why you have the possibility to post bug report in the new discussion I've opened!
Here the changes:

• Better optimization
  
• Deletion of the introduction!
  
• Minor changement...
  
  
  Yeah, the list is really short, but in it, there a lots of changments!
  I hope everything will work pretty fine now! If not, send your bug report into the discussion!
  If you want to say things on this update, you have an other discussion for that! (Changes that doesn't make you happy, changes that I would have to make...)
  
  Have fun,
  Goodbye!