Moved setup code from global scope of Registry to energenie.init() ...

This makes it possible to use the registry in test cases

Improved registry listing by using iterator

setup_tool tested in simulation and works OK

setup_tool finished, ready for testing

setup_tool now written, ready to start testing

About half of the setup tool is written and roughly working

Design for all setup_tool actions done

setup_tool main menu written and working

Defined requirements for demo apps including setup tool menu

Specified the demos that we want to write as part of the device classes testing