fixed "fluid.html.html" typo; restored missing landing page content

Hi,
I've just started working with the hyde-bootstrap template, and it's great. Thank you!

I've fixed a couple of things:
1. in index.html, "fluid.html" had the file extension shown twice ("fluid.html.html")
2. most of landing.html was missing for me (using hyde 0.8.7), but changing "content" to "container" fixed it.

Thanks again for providing this template, I've found it very useful.

Cheers,
Heather