Bug 1038395 - Build CTA landing page for learners / makers

<http://localhost:9006/from/firefox-2014/>
<http://localhost:9006/for/learners/>
<http://localhost:9006/for/mentors/>
Oh yeah, I totally support old-browser compat, but I thought strict mode just gets executed as regular non-strict code if browsers don't support it? I know it *technically* changes semantics of the running code, which means yet another wrench in the ol' compatibility matrix, but I guess I was under the impression that in practice, the only semantics changed were the crashy ones, i.e. if it doesn't explode in strict mode then it won't explode in non-strict mode (but not vice-versa). I know @rossbruniges disagrees, though, and thinks you should only use strict if you know *all* your users will have it enabled...

Either way NBD since we're not using it, although it is an interesting conversation nonetheless. :)