Fixes to the Rules Page

I have fixed a couple of things with the Rules page. First of all the text is no longer covered by the header and footer banners. Secondly, the page is now accessable from the app control banner (as it were) and thirdly, the text is now in line with the rest of the web app, e.g. with a buffer on the left and the right of the screen instead of spread across it.

Please review this code.