Initial EM7 config class
Merge branch 'develop' of https://github.com/sdlowrey/ptrial into develop
Clean up manager base init
Test modules for making an observer into a tiny web service.

Based on a recipe in the Python Cookbook, 3rd Ed., this initial test
simply registers a function that reads the observer queue whenever
an HTTP GET request is received for that observer.

It's not refined, but it proves that we can access observer data remotely
via a REST interface.  This removes all the tedious "manager" crap I was
trying to dream up.

Hopefully, one process should be able to run all the desired metrics threads
and deliver their data as requested.

creates a single observation thread, then starts
Add state-getting coolness to the LoopObserver and WSGI test module
Streamline the creation of diskstat JSON response
Add observer option to use timestamp as a value instead of a key.  Fixes #1