Add MsgSerialize

git-svn-id: https://www.ocp.inf.ethz.ch/svn/aos/trunk@5867 8c9fc860-2736-0410-a75d-ab315db34111
allow window storage from navigator for certain non-component windows

git-svn-id: https://www.ocp.inf.ethz.ch/svn/aos/trunk@5868 8c9fc860-2736-0410-a75d-ab315db34111