Update entitlement card to use Change or Leave Session.

LEARNER-3646

common/djangoapps/student/tests/test_views.py

@@ -407,7 +407,7 @@ class StudentDashboardTests(SharedModuleStoreTestCase, MilestonesTestCaseMixin):
             - exactly one course item, meaning it:
                 - has an entitlement card
                 - does NOT have a course card referencing the selected session
-            - an unhidden Change Session button
+            - an unhidden Change or Leave Session button
             - a related programs message
         """
         mocked_course_overview = CourseOverviewFactory(

lms/templates/dashboard/_dashboard_course_listing.html

@@ -148,7 +148,7 @@ from util.course import get_link_for_about_page, get_encoded_course_sharing_utm_
                 % endif
                 % if entitlement:
                     % if not entitlement_expired_at:
-                        <button class="change-session btn-link ${'hidden' if is_unfulfilled_entitlement else ''}" aria-controls="change-session-${str(entitlement.uuid)}">${_('Change Session')}</button>
+                        <button class="change-session btn-link ${'hidden' if is_unfulfilled_entitlement else ''}" aria-controls="change-session-${str(entitlement.uuid)}">${_('Change or Leave Session')}</button>
                     % endif
                 % endif
             </span>

lms/templates/learner_dashboard/course_card.underscore

@@ -18,7 +18,7 @@
                     <% if (dateString && !is_unfulfilled_entitlement) { %>
                         <span class="run-period"><%- dateString %></span>
                         <% if (user_entitlement && !user_entitlement.expired_at && !is_unfulfilled_entitlement) { %>
-                            <button class="change-session btn-link" aria-controls="change-session-<%-user_entitlement.uuid%>"> <%- gettext('Change Session')%></button>
+                            <button class="change-session btn-link" aria-controls="change-session-<%-user_entitlement.uuid%>"> <%- gettext('Change or Leave Session')%></button>
                         <% } %>
                     <% } %>
                 </div>