added email config file.
added email config file reference to main config
implemented creation of notification to be sent to users when a new account is created (email only)
added Notifications, NotificationTypes, PasswordRequests models on API side
Merge branch 'master' of https://github.com/TrainingCoders4AfricaKenya/FarmAfrica
Merge pull request #27 from muya/master

Added initial notification sending functionality for newly created users