Cleanup and accessibility tweaks.
Update Bootstrap to v3.3.0.
Rename index.md to index.html.

It's HTML only.
Remove `img-responsive`.

It's causing the images not to show up at all on IE8. Plus we don't really need it.
Move code where is needed.
Switch to `&bull;` for the title separator.
Remove center alignment from table.
`&middot;` looks even cleaner.
Update dependencies.
Update bootstrap.css.

This is temporary until v3.3.x is out and we have the customizer's autoprefixer fix.
Switch to `span` for the font icons.

It's semantically more correct.
WIP