Added "tough cookie" dependency to allow request clients to keep cookies (required for a user to demonstrate that they are logged in).
Added checks to confirm that a user is logged in.
Removed old "debugger" statement.
Fixed cookie generation in mock _session module.
Added cookies and sessions to the whole test express instance, otherwise we wouldn't be able to see if a user is logged in from the write API.
Moved express configuration to the express module.