Merge pull request #2 from fccn/igobranco/issues/184/courseoverview_s…

…tart_end

fix: the start_date and end_date is no longer used on course overview

nau.py

@@ -247,13 +247,15 @@ def course_runs(self):
 				enrollment_end, enrollment_domain, invitation_only, 
 				max_student_enrollments_allowed, announcement, catalog_visibility, 
 				course_video_url, effort, self_paced, 
-				certificate_available_date, end_date, start_date,
-				COALESCE(enrollment_start, start_date) as enrollment_start_or_course_start,
-    			COALESCE(enrollment_end, end_date) as enrollment_end_or_course_end,
-				DATEDIFF(COALESCE(enrollment_start, start_date), NOW()) as days_to_enrollment_start,
-    			DATEDIFF(start_date, NOW()) as days_to_course_start,
-    			DATEDIFF(COALESCE(enrollment_end, end_date), NOW()) as days_to_enrollment_end,
-    			DATEDIFF(end_date, NOW()) as days_to_course_end,
+				certificate_available_date,
+				end as end_date,
+				start as start_date,
+				COALESCE(enrollment_start, start) as enrollment_start_or_course_start,
+    			COALESCE(enrollment_end, end) as enrollment_end_or_course_end,
+				DATEDIFF(COALESCE(enrollment_start, start), NOW()) as days_to_enrollment_start,
+    			DATEDIFF(start, NOW()) as days_to_course_start,
+    			DATEDIFF(COALESCE(enrollment_end, end), NOW()) as days_to_enrollment_end,
+    			DATEDIFF(end, NOW()) as days_to_course_end,
 				(select count(1) from {self.edxapp_database}.student_courseenrollment sce WHERE sce.course_id = coc.id) AS enrolled_count,
 				(select count(1) from {self.edxapp_database}.student_courseenrollment sce WHERE sce.course_id = coc.id and sce.is_active) AS enrolled_count_active,
 			    (select count(1) from {self.edxapp_database}.certificates_generatedcertificate cgc WHERE cgc.course_id = coc.id) AS certificates_count,