Get CDA working in http with "double cookie for single session" (Lemonldap-680)

git-svn-id: svn://svn.forge.objectweb.org/svnroot/lemonldap/branches/lemonldap-ng_version_1_3-bugfixes@3160 1dbb9719-a921-0410-b57f-c3a383c2c641