'setup_test_cases_content()' will work independant of 'problem.includ…

…e_test_cases' in order to allow including the tes-cases without the need of save again the problem-data.

judge/models/problem_data.py

@@ -156,7 +156,7 @@ def save(self, *args, **kwargs):
     def setup_test_cases_content(self):
         self.test_cases_content = ''
 
-        if self.problem.include_test_cases and self.zipfile:
+        if self.zipfile:
             zip = ZipFile(self.zipfile)
 
             content = []