files out in a separate model for scalability. Removed the "pause"
functionality.
- Server_Add_Controller extends Admin_Controller so that we don't have
to check for admin every time.
- Task completion time now factors in the time it takes to walk the
arbitrarily deep trees
- Moved checkbox management entirely into JS using jQuery
- Simplified the JS considerably
- 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.
