2.1 survey model

No need pull  this request.
Just give OK.

Sale system than before but with #copy / #import link. Survey model with: user can copy all model, user can manage all model. For user can copy all model : a global settig too.

Think i use popuptip for language test too, adding it to group too.

In the commits there are some with CRLF/LF change, no other change (stat.js, template/default css and js)