#13821 bugfix in multiple select widget

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/Naaya@19773 a0171fae-0946-0410-966d-b1775066cd26
Released 3.2.18, new version 3.2.19

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/Naaya@19774 a0171fae-0946-0410-966d-b1775066cd26