As a user, I want to be able to log in to my account to access all capabilities the site has to offer

- Add Login / Logout to Nav
- Enable/Disable features based on logged in status



Acceptance Criteria:
- A user can login to their account using their email and password credentials
- A user can logout of their account
- A user has access to additional features when logged into their account: add TV shows to their account, leave reviews, add Shows to library