Seperate data from code

Banners are content more than anything.
Add a little erorr checking, another cow
More banner sanity checking.
Add a tasteful URL to some banners.
Render the banners nicely
Fix escaping, whitespace

Since banners are now just data and not code, they don't need their
backslashes escaped any more.
One more backslash
Whitespace cleanup, no blank lines plz
Merge pull request #1365 from todb-r7/banner-logos

Delivers Pro #41793473