Switched AppBus for ResultHandler, Controller for Helper. Added the basics for LifecycleControllers and implemented it for BriarActivity and NavDrawerActivity

Removes all programatic calls that modify the layout and uses the XML
resource instead.

Fixes #270.

Modified the project structure, removed module extension and went instead for a non-complete core dependency graph

also run setting the default preferences in a background thread

Closes #184

This closes #204