Ignoring _site/ from Jekyll
Adding CopdePen icon, still need to update aboutme.svg
Adding update_aboutme_svg.py script.

Adding CodePen profile link.
Changing most links to HTTPS.

Also changed userscripts URL to Wayback Machine.

CodePen does not support HTTPS.

GitHub Pages don't support HTTPS for custom domains (like mine).
Adding Reddit icon.

Also adding hidden Steam and Flattr icons.