FR: a way to add the source page link to the breadcrumbs

Hi,

So this is partly a FYI and partly a feature request.

Basically I added some (probably unclean) code to add a link to the source of the page after the breadcrumbs.

Here is the commit(s):
https://github.com/thiswillbeyourgithub/website/commit/9dbb7577af3b69300c4be18efd3388132619a7c1
https://github.com/thiswillbeyourgithub/website/commit/8c25e8ff4408f24b8aba9ccf888072ef4a03ae59
https://github.com/thiswillbeyourgithub/website/commit/02c7b6f937dd8b9091d3c394debf02d86609760a

If you find this interesting I can make a PR for it. Otherwise if you find a better way to code this I'm all ears. It was quite a PITA to get this working with my current skills.

Feel free to close this.