Please Read Over Comments

I was very explicit with my comments. Everyone should have a better idea of what the layout is going to look like. I'll be asleep by 12am, so please let me know if I missed anything or if you have any questions/concerns before then, if not, see you tomorrow!
Modal needs to be coded on every page that requires a sign in. Index, How It Works, Find A Table, and Be A Host. Instead of duplicating the code on each page, we make a partial (done) and require that partial on each page. Now we set a condition on the navbar itself to hide the "Sign In" link if the user is already logged in or show it on every page if the user is not signed in.