(bug #2750) Cannot return to another branch if the independantbranch option is set...

(bug #2750) Cannot return to another branch if the independantbranch option is set as ON

The code was modified to change the holding branch ONLY if the return to the right branch is done. If you set IndependantBranch to on, you must return the document to the HomeBranch.
And verify the return is done before show the message that allow to transfert the document to another branch.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>
Signed-off-by: Henri-Damien LAURENT <henridamien.laurent@biblibre.com>