Modified to use correct app.js export.

Modified to use correct app.js export.
Passport implementation

Basic implementation of passport’s serializeUser, deserializeUser, and
LocalStrategy.  Slightly reconfigured route logic for extensibility
(e.g. loginSuccess, loginFailure, etc).  Modified export statements to
support additional exports.
Added Post method stub.

Added Post method stub.  Modified app reference to use new export.
Added Post method, success/fail routes.

Added Post method stub.  Added routes for loginSuccess and
loginFailure.  Added stub for passport.authentication (does this need
to move?).  Modified app reference to use new exports.