Revert "integrating essence of opensim-git 91e1aaa5d41c29fa17609c69ca8bc2a8017dc161 and e0c6bfa81e842f4ba1534882c6d76a3e6e94d68b:"

This reverts commit bf81ef111e3289c07c739a772c35782b109e6992.

That patch removes unforeseen parts of the avatar data transfer