Email notifier and Issue events
Many improvements related to Notification component
  - Added type, webUrl and resourceUrl to Notification model
  - Added NotificationFactory
  - Added method to NotificationRepository to filter notifications by user and return a count of them
  - Frontend visuals for notifications done, notifier added in the header and a page listing notifications is available
  - Changed routes for issues, now all have project prepended
Added notification bundle specs
Added functional tests and fixed bug discovered
Merge pull request #21 from kreta-io/feature/web-notifications

Notification frontend interface