This makes loading faster, with less I/O, avoids unnecessary
code duplication (around 1k lines shaved), and ensures that
all the panels link and work appropriately.
By the same token, it will stop external panels from being
created, and loaded.
https://bugzilla.gnome.org/show_bug.cgi?id=690036
This adds a panel where we present information and controls
affecting the users privacy. This initial commit just puts
the framework in place, the panel itself is empty.
https://bugzilla.gnome.org/show_bug.cgi?id=687774
