First batch of stuff

@himedlooff @ascott1 @contolini
I think we figured out the best solution for this in the FJ room talking with James and Jui about how we want to use share links.

We should be able to set up utility functions in Sheer that can handle this kind of thing on-demand, without having it clutter up the base template. I'm going to connect with Ross to find out the best way to approach that.