error trying to import model from json file

[rodriguez-facundo]

• error:
  line 69 in netpyne.sim.load.py is using object_hook to convert data loaded with JSON package.
  data = json.load(fileObj, object_hook=_byteify)
• Expected behaviour
  load a json file and save the strings as Unicode type
• Current behaviour:
  load.json loads the dictionary, and applies the _bitify function leaving all Unicode text as binary type, resulting in no data being accessible by the GUI
• NOTE:
  that works for python 2 because there is a difference between string and Unicode, but py3 adopted Unicode as standard

[salvadord]

probably will need to add a condition to check if running py2 or py3