Permission errors

[sabas]

From the ToDo list When a user tries to access a page that requires permissions, give them a login screen if they aren't logged in

function permission_error($message)

in util.php line 33 could give a warning (with ui-state-warning) and redirect to login page

[sproctor]

There is no ui-state-warning. If they're logged in, I added ui-state-error. If they aren't, I redirected it to the login page.