Switch to `span` for the font icons.

It's semantically more correct.
Remove stray `p` end tag.
Add the page number in Archive page.
Move pager to the top of the posts.
Merge pull request #44 from mpc-hc/pager2

Move pager to the top of the posts.
Merge pull request #42 from mpc-hc/archive-pager

Add the page number in Archive page.
Update dependencies.
Simplify rules.
Improve pager.
Update changelog.md.
Update Jekyll.
Update uncss ignores.
More accessibility tweaks.
Update dependencies.
Simplify stuff a little bit.
Specify `role="button"` in `a` tags that behave like buttons.
Update Bootstrap to v3.3.1.
Bootstrap customizer doesn't handle default value changes good yet...
Switch to `h1` for index page.
Add a news post about SF project of the month award.