directions page and navbar adjustments

Adjusted the order of the navbar to accompany the addition of the directions button.

Also added directions.html.
Not entirely sure on the layout at the moment, but for sure will have:
- Three inputs at top and a submit button for start, destination, and time.
- Generated routes below the inputs; maybe the ability to filter these generated routes. They could appear like colored boxes with green being fastest, yellow medium, red slowest

We can also do some other stuff later like:
- most visited stops that you can click instead of having to search for starting and ending destinations
- ability to search an actual place (like Chipotle) and have it automatically choose the closest/fastest destination

Maybe we could even have a bus tracking page? Dunno. 
As Kevin Garnett once said:
"ANYTHING IS POSSIBLE!!!"

TODO:
Backend (POSSIBLY KNOCKOUT?!?!) for the choices
Other mentioned features