Gitlab Social Media Link

[lightsighter]

We don't currently have a link for the gitlab repo in the social media side bar, which seems unfortunate since that is nominally the main repo. I think we probably need to fix this, but I couldn't see any obvious way to get jeykll to automatically do the gitlab link for us in the social media section. I tried just adding it, but it didn't work.

[elliottslaughter]

The social media icon uses a font called icomoon which we appear to have an embedded copy of in our repository. So I think the first question is, whether the version we embedded has the Gitlab icon, and then we need to figure out how to hack the CSS to add it.

[lightsighter]

I checked, what we really have is a tiny copy of just 11 icons from icomoon, but not gitlab. I found the SVG for gitlab's icon from their website, but it seemed insufficient to get things to work. I got it to build the page without any errors, but there was no image on the rendered page.