-overview page displays the tickets that have been made since the user's last login (this has not been tested extensively)
-"create_date" in the tickets tables has been changed to timestamp, and "last_logout" timestamp column has been added to the users table, so that the database can compare them (to find tickets made after a user's logged out)
-slight modifications to the headers and body of the search tickets function in database to factor in checking of timestamps versus log in
-the sessions now stores a timestamp that is the time of last user logging out. app.js at login performs a getting of the last logout time, and at logout sets the current timestamp