Added jqueryui and bootstrap to application.js
Added custom css to include bootstrap.
Added navbar to application.html.erb.
Removed search and fixed alert to only show when provided.
Added user link and login/logout links.
Fixed home index to render index.html.erb (with navbar).
Fixed logout and sign in links.
Fixed home link and styled alert messages.
Added sign up link if no user is logged in.
Merge pull request #2 from matthew-parlette/navbar

Add navbar and some site styling.

Adds a navbar on top with some additional styling through the site. This also adds a sign in, sign up, and sign out link to the right side of the navbar.