Security enhancements.

Protect wp-config and local config files.
Also prevent online editing of script files.
Fine-tune the positioning of the top search bar.

Style applied to the search widget only when it appears in the
"top-widget" position.
Fairly hacky method of using "!important" in the CSS, but let's be honest, the Responsive theme developers started it (they used !important in their code, so I had to override it).