New features and more

By setting a translation to null, you remove it.
- Translations.php

Added a second parameter to specify default value if there's no
translation when trying to get it.
- Control.php
- Layout.php
- Page.php

Changed the framework's base library name to "Newnorth" from the
original "Halvsmekt"
- Action.php
- Actions.php
- Application.php
- Control.php
- Controls.php
- DataManager.php
- DataType.php
- Halvsmekt.php
- Layout.php
- Page.php
- Route.php
- Translations.php
- Validators.php

Renamed "/Framework/Halvsmekt/Halvsmekt.php" to
"/Framework/Halvsmekt/Newnorth.php"

Renamed "/Framework/Halvsmekt/" to "/Framework/Newnorth/"