Changing input format does not save

The default input format cannot be changed because the call to filter_form does not specify the proper form parent. So the variable is saved as 'filter' instead of 'joomla_input_filter'.

Patch coming.

I was worried this was a security problem, but the default filter for the site is stored as 'filter_default_format', so it is only a problem if you wantt to use an input filter other than Full HTML (which I do).