[Bug] Vimeo videos don't show up in speaker talk page

[Roderick-Jonsson]

Expected behavior

Vimeo videos show up on speaker pages

Actual behavior

Nothing happens as if no video has been linked

Reproduction Steps

Add vimeo video url to a speaker file in the programs folder
ex.
content/events/2017-zurich/program/tharmes-siva.md
vimeo = "https://vimeo.com/218690382"

Operating System and Version

Mac OS X 10.8

Web Browser and Version

Safari 10.0.2 (Add Blocker addon installed)

Github Pull Request
devopsdays/devopsdays-web#2471