Adding comment about div that can't be removed.

Also fixing Meta class being defined twice in one model

common/djangoapps/course_modes/models.py

@@ -46,9 +46,6 @@ class CourseMode(models.Model):
 
     .. no_pii:
     """
-    class Meta(object):
-        app_label = "course_modes"
-
     course = models.ForeignKey(
         CourseOverview,
         db_constraint=False,
@@ -199,6 +196,7 @@ class CourseMode(models.Model):
     CACHE_NAMESPACE = u"course_modes.CourseMode.cache."
 
     class Meta(object):
+        app_label = "course_modes"
         unique_together = ('course', 'mode_slug', 'currency')
 
     def clean(self):

openedx/features/course_experience/templates/course_experience/dates-summary.html

@@ -2,6 +2,8 @@
 from django.utils.translation import ugettext as _
 %>
 <%page args="course_date" expression_filter="h"/>
+## The date-summary-container div must stay here because it is used in our
+## mobile app javascript code as a selector.
 <div class="date-summary-container">
     <div class="date-summary date-summary-${course_date.css_class}">
         <div class="left-column">