Query for POST method

[len-ro]

Hello, I found this tool very useful and I want to provide a patch since in the case of POST method the query string is not present in the har. The small change should be done in request.py:

 queryToParse = uri.query
 if not uri.query:
       queryToParse=self.msg.body
 self.query = urlparse.parse_qs(queryToParse, keep_blank_values=True)

this way the POST parameters are properly displayed.