Add a new system preference 'AutomaticItemReturn' :

Add a new system preference 'AutomaticItemReturn' :

if this prefence is switched on: the document returned in another library than homebranch, the system automaticly transfer the document to his homebranch (with notification for librarian in returns.tmpl) .

switch off : the document stay in the holdingbranch ...

correcting bugs :
- comment C4::acquisition (not using in request.pl).
- correcting date in request.pl
-add the new call of function getbranches in request.pl