Tracking: Implement user accounts

[FoRVaiS]

Prerequisite issues to be completed:

• Create a landing page #74

Required issues to track:

• Setup express sessions to track authentication status #75
• Create a registration page #76
• Create an endpoint and controller to handle user registration #77
• Create a login page #78
• Create an endpoint and controller to handle user login #79
• Create a profile page for each user #80
• Create an endpoint and controller to handle user information requests #81
• Create a "logo" button that redirects to the landing or home page based on authentication status #82
• Add an icon or link to the navbar that redirects to the user profile #83
• Redirect to the user profile if an authenticated user tries to access the landing or login page #84
• Redirect to the user profile when successfully authenticated #85
• Restrict routes to specific user roles #86
• Restrict routes to authenticated users #87
• Restrict routes to a single user #88
• Display the user's timeline on their profile page #90
• Fix username and password fields mutations #119
• Update session with authentication details #120
• Add user roles #124
• Link to login from the "Adopt Now!" button in the landing page #126
• Create a quick-link to the registration page from the login page #127
• Create a quick-link to the login page from the registration page #128
• Fix the login page title #129
• Include extra required user data in the registration form #138
• Create validation for mandatory fields #140
• Create input validation for every input #141
• Create a logout route and button #150

Optional issues to track:

• Create an edit form to allow users to change profile information #89
• Fix the uneven space distribution between age and gender fields #139
• Hash password before storing in user document #143