Pynsgr

* Modernised code base (setup.py -> setup.cfg)

* Major restructuring - renamed to pynsgr; main commands now nsgr_job and nsgr_submit

* Simplify deps, initial release on pypi

* Parse and return metadata if present in job status

* Modified to work with python 3 as well as python 2.

* client.py can be used with DIRECT or UMBRELLA authentication now. If using umbrella
authentication, add the endUserHeaders dictionary when instantiating CipresClient.Client.

* Accepts job submission parameters with or without the "input.", "vparam.", and "metadata."
prefixes that are documented in https://www.phylo.org/restusers/docs/guide.html#SubmitJobs
and https://www.phylo.org/restusers/docs/tools. For example, both "runtime_=0.25" and
"vparam.runtime_=0.25" work with python_cipres.

* The tool to run may be specified with either "tool" or "toolId".

* VERBOSE property is no longer required in ~/pycipres.conf.

* Added -r argument to cipresjob.py to cancel and remove jobs.