Production Build for October 7th

# What's new?

This is the latest production version (will push after merge). In this PR:

 * All of Simon's PRs
 * A slight bug fix that prevents the new guide page from crashing (requires User login and thereby prevents a nil exception on the current_user object)

# What's Next?

 * Spent most of the morning researching `x-do-not-track` compliance. I have come to the conclusion that no one in the Rails community actually honors it, but I will keep on looking / roll my own.