GitLab

fixed the peoplefinder link at the bottom of the page and now the slack, facebook, twitter, people, and peoplefinder links open in new tabs/windows

fixed longtime spacing problem, reordered social media to put Slack first, added Instagram and Tumblr, because why not

Meant to fix this like 4 commits ago, but have forgotten about it each time, so I made a commit just for fixing the Twitter link.