create bristol building details management page and connect it with admin page, update the user_manage.php and uni_manage.php to make them can only update one column

Update the chatPage css, and connect it with interface.php, Modularise the session check code into session_start.php.

implement user have two status which is online and offline. and create a page to chat with others, this page now has implement showing the online user list in real time.

implement using php to connect to ChatGPT API using ChatbotConfig.php, and implement a interface to chat with bot using cahtbotpage.php. Connect to application

fix the problem when change user profile, cause the user info is depends on the table that include student's info

create register page and implement the function of it. And update the relationship between mysql database with interface, LoginPage and setting.php