Revert 4b9092b9 and add SpiceSession:webdav-server property instead
This reverts commit 4b9092b9 "session: make spice_session_get_webdav_server() public".
Instead of publishing the function to access the PhodavServer from spice-gtk-session.c, install a new read-only property "webdav-server" and use g_object_get() to retrieve it.
Signed-off-by: Jakub Janků jjanku@redhat.com