Figure out why the pie chart icon isn't showing up

[waldoj]

The icon for "Completeness" is Font Awesome's pie-chart icon (for lack of any better idea), but it's not showing up:

I suspect that Open Data Census is using an old version of Font Awesome, and this icon was created after that version.

[waldoj]

That went badly.

[waldoj]

I'm using a different icon as a placeholder, but it really doesn't indicate "completeness."