Revert "Plane is now created and sized to the levelSize."

This reverts commit c7d91ae6118af281f0890b0651b1a06efa42ff25.
Revert "Revert "Plane is now created and sized to the levelSize.""

This reverts commit cf3f89af271264bb0e8ab813e7b28c9ce7c0dbfb.