- Show the "Server Add needs configuration" message whenever
there are no paths.
- Un-ajaxify the admin code to remove complexity and allow us to
update the status message as appropriate.
- Rename server_add_admin.html.php to admin_server_add.html.php
for consistency.
- Fix up form to properly display error messages
- Get rid of server_add_dir_list.html.php now that we're
non-ajaxified.
- Change delete <span> to an <a> for non-ajax world.
