Adds base files for PHP
Add PHP login form
Fixes hashing
Adds user registration
Adds base for actual chat app
Adds logout script
Adds Login form
Adds 'getUsername` to the User class
Hooks the message feed up to the backend
Adds message posting
Implements the user list feature
Fixes minor issues with message feed
Removes an unneccesary image
Adds 'PHP' section to the README