Get rid of samples and default implementations for now.
Adding a simple test app.

Made a blocking version of find first service.
Clean up resolve handler.
Clean up retain cycle and general clean up.
=
Merge branch 'master' into JSONRPC

* master:
  Clean up retain cycle and general clean up. =
  Clean up resolve handler.
  Adding a simple test app.
  Get rid of samples and default implementations for now.