PA Review: User Auth

[wongshington]

• [x] Users can sign up, sign in, log out
• [x] Users can use a demo login to try the site
• [x] Users can't use certain features without logging in (creating chirps & likes)
• [x] styled to perfection
• [x] no bugs except "features"

[wongshington]

fix styling

• [x] the session form errors should be in red font

[wongshington]

looks gucci gucci gucci