summary field is not set in response object

[bmesuere]

For the consistency of the platform, please fix this and let someone re-evaluate all exercises.
Correct exercises can simply use "correct", exercises with failed tests should report the number of failed tests.

Original issue by @bmesuere on Sat Sep 09 2017 at 16:50.

[pdawyndt]

@bmesuere I did this in analogy to the Java judge, where the summary-field is (was?) empty; I think the reasoning behind this is that the status and the summary are a bit redundant if they only repeat the same information

Original comment by @pdawyndt on Sun Sep 10 2017 at 17:43.