1.0.3dev: fixed raising `UnicodeEncodeError` when unicode characters are used in new session id on prefs/advanced page (closes #11319)


git-svn-id: http://trac.edgewall.org/intertrac/log:/branches/1.0-stable@13397 af82e41b-90c4-0310-8c96-b1721e28e2e2