1. There is a login page with a user and a password field and a submit button.
The users are csuhduke, csuhduke1, ... csuhduke9 on the local machine.
All passwords are cs6522.
2. After a correct login, generate a welcome page with 3 buttons:
send_mail, check_mail, logout
3. The send_mail page has 2 text fields (To and subject) and a text area for
the data and a send button. The sender should be the login user.
After sending the mail message show the welcome page.
4. The check_mail page shows a listing of the mail message dates, senders and subjects and checkboxes
to select the message for deletion and a link or display button to display the message.
There is a delete button to delete the checked messages,
a button to go back to the welcome page and a logout button.
The logout button will send back the login page to allow a new login