Added a footer

Resolves #648.
Resolves #714.
Apparently somehow resolves #1217, although I suspect the real issue was actually fixed in some earlier pull and we just never tried it until now.

http://jenkins.buttonweavers.com:8080/job/buttonmen-AdmiralJota/420/

Dependent on #1199.

As for things mentioned in the original ticket, this provides "webmaster / contact details", "link to issue tracker" and "copyright". We have other open tickets that are relevant to "support / FAQs" (#137) and "legal disclaimers and privacy policy" (#551). I'm not sure how we want to approach implementing "deployment date / time / version"; I'll leave it up to someone else ti create a separate ticket for that if we want to include it.
Why is the footer separator a different page element from the footer?  The header separator isn't.  The fact that this makes one extra thing that needs to be removed from tests, and that it's different from the header case, makes it seem incorrect to me.

I'm also not sure why you added a comment that says "bleah".  :>)