Built-in wiki-like help system in Helprace.

Seems like the only thing Helprace is missing is a wiki-like help system which is built in.

For small development shops this would be a perfect addition.  For now we are using grav for our help:https://learn.getgrav.org/  which works well.  Very similar to https://readthedocs.org/.  

But having this would pretty much solve all our help and support needs in a one place!