Don't include template styles twice. #17

(Moved from #17.)

`style.css` is being loaded twice in `action.php`, once in `load_template()` and once in `load_css()`.  The former is correct, because it makes use of `css_loadfile()` which does the proper URL fixing etc.  The problem is that then it's overridden in the second inclusion, so things don't work.

Am I correct in this?  I've removed the `$html .= $template['css'];` line in my install and everything's working correctly.  I'll send a pull request...

:-)  Thanks!