[Issue #398] Fix the help/variables command and API endpoint
[Issue #398] Add simple test and better displaying for help/variables
Moved optional network grapher into plugins repo. Fixes #497
Adding searched=False to search output structure to preserve consistency (viz searched=True)
added specific python version
Merge pull request #409 from jwaterfaucett/fix_help_variables

[Issue #398] Fix help variables
Merge pull request #504 from Treggats/add_specific_python_version

added specific python version