Change video preview

[mtbentley]

Change the video preview image. This should be an enhancement, but I'm not sure how to do that.

Right now, it's the meshnet logo, but with a little line coming out of the right. It would look better if it was just the logo, no line. Assuming vimeo allows setting the preview, this shouldn't be to hard to change.

[lukevers]

This is the thumbnail that the guy who created this video and uploaded to Vimeo picked. I've checked online but I haven't found an option yet.

[mtbentley]

I figured there'd be a way to change it when embedded. If not, that's fine.

[lukevers]

Nope; however, we can make it not a vimeo video like what I did on https://maryland.projectmeshnet.org/

edit: that might be a bit much though