Link to Feflow for more protocols

[jthorton]

We should advertise that more protocols are available currently via feflow and link to the repo and documentation.

[IAlibay]

The current status of FEFlow is a little bit complicated (there's some migrations that need to happen, the feflow docs aren't available afaik, etc..), so for now we probably shouldn't. Once we clean things up a llittle that will change a bit.