Fragment factory

Use FragmentFactory to open drawers, navigators, pages or intents.
Updated logging
Removed PageStackHelper
Updated app.json to version 6

Still Needed:
Fragment caching on drawer menu items
Better handling of the back button
A native page

Is there a way in Java to get the current class/method you are in? That way the logging could be simplified so we don't have to manually sync class and method names.