Add event file for GDCR 2019 at Sophia Antipolis, France. (#619)
Add event file for GDCR 2019 at Sophia Antipolis, France. (#619)

* Add event file for GDCR 2019 at Sophia Antipolis, France.

* Fix the event file for GDCR 2019 in Sophia Antipolis, France.

* Fix the sponsors for GDCR 2019 in Sophia Antipolis, France.

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