Feature: User Menu and Log Out

[gracecizma]

• [x] On every page of the site, I should be able to see a User Menu Button in the upper-right corner that opens a user drop down menu when clicked.
• [x] After a user successfully logs in, The user drop down menu contains the logged in user's first name as a greeting: "Hello, "".
• [x] After a user successfully logs in, The user drop down menu contains the logged in user's email: .
• [x] After a user successfully logs in, The user drop down menu contains: a "Log out" Button as a menu option.
• [x] After a user successfully logs in, the user menu does NOT contain the "Log in" or "Sign up" menu options.
• [x] Upon clicking anywhere outside the User Menu (including on the User Menu Button), the menu drop down hides.
• [x] Upon clicking anywhere on the greeting or email inside the user drop down menu, the User Menu remains open.
• [x] Upon clicking the "Log out" menu option, it performs a log out where it will clear the session/cookie.
• [x] Upon clicking the "Log out" button, it performs a log out where it will close the user drop down menu.
• [x] Upon clicking the "Log Out" button, it performs a log out where it will navigate the user to the home page (/).