Moved configuration classes to io.uberwatts.rest.application.config
Moved configuration.yml to module root
dropwizard-testing 0.7.1 as dependency to rest-application
fest dependency to rest-application
More sanity to config API

-Getters and setters to have Jackson working.
-Removed (fake) clientSecret property from configuration.yml.
-All "public" configuration that will be served to uberwatts frontend
 lie behind a publicConfiguration property.
Resource for providing Uberwatts service configuration to front