Merge pull request 'block edit someone else test' (#33) from fature/block-edit-someone-else-test into master

Reviewed-on: #33

templates/canNotEditTest.html

@@ -0,0 +1,3 @@
+Nie możesz edydotwać testu stworzonego przez innego użytkownika
+
+<input type=button value="Powrót do porzpedniej strony" onClick="javascript:history.go(-1);">

trials/views.py

@@ -192,6 +192,8 @@ class EditTestTemplateView(TemplateView):
         self.test_id = test_id
         context = super().get_context_data(**kwargs)
         context["test"] = self.get_queryset().filter(id=test_id).prefetch_related("questions__answers").first()
+        if context["test"].created_by.email != self.request.user.email:
+            return render(context, "canNotEditTest.html")
         return context
 
     def post(self, request, *args, **kwargs):