Fruits/Veggie Info/Bootstrap/Routes/Links

This was a big commit.
First: I added most of the nutritional information for the fruits and
vegetables on their respective pages. I also expanded on the bootstrap
that was added, making enough accordions for each of the 20 items.

Second: I added a header and footer to the project to provide helpful
links such as a Home button and a Sign In/Out button that responds to
if a user is signed in or not.

Third: I made the home page look a little more like a home page by
adding a bit of formatting and links to navigate to the other main
sections of the site.