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

and stay in it when configuration changes

Closes #370

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

Includes code from https://github.com/consp1racy/android-support-preference
License: Apache License v2.0