Address some code review feedback
Correct error code in test
Don't try to send emails to empty addresses
Add tests for subscriptions
Add tests for Next Steps email
Fix specs
Add reason for disabled test
* Switch from auth.loginUser to User.loginPasswordUser with Promise
* Remove a cascade of unused views that were using auth.loginUser: StudentLogInModal, StudentSignupModal, HourOfCodeView
* Also remove auth.createUser
* Take `/server/routes/auth` and move most of the logic to `/server/middleware/auth`, refactoring to use generators.
* List all `/auth/*` endpoints in `/server/routes/index.coffee`.
* Fill in testing gaps for `/auth/unsubscribe`.
* Add debug log when `sendwithus` is not operational, so it 'works' in development and testing.
* Use passport properly!
* Track Facebook and G+ logins in user activity as well as passport logins.
* Fix error property name -> errorName
* showNotyError can handle Backbone error callbacks where jqxhr is second param
* showNotyError correctly shows JSON error message or name
* Add timeout to showNotyError
- move and rename files
- use associative arrays which store handlers for 'dynamically'
load module from de db route
- store models_path in test/server/common,
a global model variable has the same name that the filename of the model
