Added addInitializer callback to init i18next
Refactored mousetrap module.
Refactored Notebooks module. Now it should stop listening to events when
it stops.
Bug with google-code-prettify. Had to shim it.
Run Unit tests with grunt tasks.
Started to refactor application's code to event driven model.
Use "navigate" event instead of calling App.navigate function
Bug fixes. A function API.getArgs in AppNote.js was rewritten to make it more clear.