Re-introduced wronly removed XMLRPC entry-points for sflvault-qt

During the migration to Pyramid 1.2.7, I mistakenly thought that the few
"foo.bar" (as opposed to "foo_bar" that is normally used) were spurious
and I removed them in abdb4e1ae41d8cd94ae2441455962c600cfe1ac2.

However, it turned out that they were needed by the Qt client of
sflvault. Oops.

I re-add them in this commit.