[issue871] Fix Google Code Bug Importer

Continuation of #50. @paulproteus and I are pairing on a CR and we will merge this tonight.
What if we receive unicode data? What type does the Scrapy response return? According to the docs, scrapy.http.Response.body is...

    A str containing the body of this Response. Keep in mind that Reponse.body 
    is always a str. If you want the unicode version use    
    TextResponse.body_as_unicode() (only available in TextResponse and 
    subclasses).


We should use a DictReader class that will handle UTF-8 encoded bytestrings (e.g. if the bug data we receive contains non-ASCII characters).