Updates to database and website

• Re-logging added to the website, now when connection on websocket is
lost user will have to re-log to the system, by using a pop-up window
• Admin is now able to add new users into the system
• Admin is now able to remove users from the system
• Admin is now able to see all the users that are able to access the
system
• Users passwords are now being hashed before being stored in the
database