Revert "Merge pull request #13915 from edx/revert-13794-yro_implement-dateutil"

This reverts commit d59ab18b27, reversing
changes made to 0ebab35e89.

lms/static/js/dateutil_factory.js

@@ -36,8 +36,8 @@
                     context = {
                         datetime: $(this).data('datetime'),
                         timezone: $(this).data('timezone'),
-                        language: $(this).attr('lang'),
-                        format: $(this).data('format')
+                        language: $(this).data('language'),
+                        format: DateUtils.dateFormatEnum[$(this).data('format')]
                     };
                     displayDatetime = stringHandler(
                         localizedTime(context),
@@ -45,6 +45,11 @@
                         $(this).data('datetoken')
                     );
                     $(this).text(displayDatetime);
+                } else {
+                    displayDatetime = stringHandler(
+                        $(this).data('string')
+                    );
+                    $(this).text(displayDatetime);
                 }
             });
         };

lms/static/js/spec/dateutil_factory_spec.js

@@ -35,7 +35,7 @@ define(['../dateutil_factory.js'], function(DateUtilIterator) {
                     'data-string="Due {date}"></span>'
                 );
                 Object.keys(testLangs).forEach(function(key) {
-                    $form.attr('lang', String(key));
+                    $form.attr('data-language', String(key));
                     $(document.body).append($form);
 
                     DateUtilIterator.transform(iterationKey);

lms/static/js/student_account/views/account_settings_factory.js

@@ -116,9 +116,10 @@
                                 title: gettext('Time Zone'),
                                 valueAttribute: 'time_zone',
                                 helpMessage: gettext(
-                                    'Select the time zone for displaying course dates. If you do not specify a ' +
-                                    'time zone here, course dates, including assignment deadlines, are displayed in ' +
-                                    'Coordinated Universal Time (UTC).'
+                                    'Select the time zone for displaying course dates. ' +
+                                    'If you do not specify a time zone, course dates, ' +
+                                    'including assignment deadlines, will be displayed ' +
+                                    'in your browser\'s local time zone.'
                                 ),
                                 groupOptions: [{
                                     groupTitle: gettext('All Time Zones'),