move a user more UserAnswer features to base class

anatomy/models.py

@@ -469,6 +469,7 @@ class Exam(ExamBase):
 @reversion.register
 class UserAnswer(UserAnswerBase):
     """User answers by candidate"""
+    app_name = "anatomy"
 
     question = models.ForeignKey(
         AnatomyQuestion, related_name="cid_user_answers", on_delete=models.CASCADE
@@ -515,9 +516,6 @@ class UserAnswer(UserAnswerBase):
 
             self.answer_compare = s
 
-    def get_absolute_url(self):
-        return reverse("anatomy:user_answer_view", kwargs={"pk": self.pk})
-
     # def get_compare_string(self):
     #     # strip here should be unneccasry (providing clean is now working)
     #     s = self.answer.lower().strip()