Pip locally installable pygor module.

[penuts7644]

Three changes were made:

• Added setup.py for local pip installation of pygor module. Changes were made to the init files within the pygor directories and import changes to all the python files.
• Updated the documentation to include this change (IGoR/docs/asciidoc/general/python_interface.adoc). Pygor can be installed using pip install ./pygor in the IGoR root directory.
• Syntax related changes applied to various parts withing the code to make it more PEP8 compliant.

I haven't made changes to the code itself. Also good to know that I used your (@qmarcou) contact information in the setup.py file.

[qmarcou]

Thank you so much for your help @penuts7644 ! I've been through your changes everything seems to work like a charm except for one change in your last commit about the 'Mismatch' vs 'Error' column in the bestscenarios module. See my comment inplace. If you don't mind, I think it would be simpler and more transparent that you edit your PR rather than me accepting it and making the change again on top of it. My apologies for the delay in my response and proper check, again many thanks!

[qmarcou]

Thanks for the swift change! I'll close and merge this PR now, thanks a lot for your help!