Preparing to switch to new combined JSON format - Added fixture-json-generator code to generate this JSON from text file.
Renamed tests directory to selenuim_tests
Fixed a typo in the fixture-json-generator
Important - JSON format used by ganetiviz now updated, check graph-objects.js file to see new format.
The JSON of vms and nodes is now combined due to GWM database hits minimization reasons (subtle)
Added *.pyc filter to .gitignore