deprecate html setting for web certs and set to true by default

common/lib/xmodule/xmodule/course_module.py

@@ -547,7 +547,8 @@ class CourseFields(object):
         display_name=_("Certificate Web/HTML View Enabled"),
         help=_("If true, certificate Web/HTML views are enabled for the course."),
         scope=Scope.settings,
-        default=False,
+        default=True,
+        deprecated=True
     )
     cert_html_view_overrides = Dict(
         # Translators: This field is the container for course-specific certificate configuration values

common/test/acceptance/pages/studio/settings_advanced.py

@@ -217,7 +217,6 @@ class AdvancedSettingsPage(CoursePage):
             'annotation_storage_url',
             'social_sharing_url',
             'video_bumper',
-            'cert_html_view_enabled',
             'enable_proctored_exams',
             'allow_proctoring_opt_out',
             'enable_timed_exams',