mattdrayer/SOL-952: Update default URLs and add backwards migration

lms/djangoapps/certificates/migrations/0020_certificatehtmlviewconfiguration_data.py

@@ -15,28 +15,13 @@ class Migration(DataMigration):
         config = {
             "default": {
                 "accomplishment_class_append": "accomplishment-certificate",
-                "platform_name": "edX",
-                "company_about_url": "http://www.edx.org/about-us",
-                "company_privacy_url": "http://www.edx.org/edx-privacy-policy",
-                "company_tos_url": "http://www.edx.org/edx-terms-service",
-                "company_verified_certificate_url": "http://www.edx.org/verified-certificate",
-                "logo_src": "/static/certificates/images/logo-edx.png",
-                "logo_url": "http://www.edx.org"
-            },
-            "honor": {
-                "certificate_type": "honor",
-                "certificate_title": "Honor Certificate",
-                "document_body_class_append": "is-honorcode"
-            },
-            "verified": {
-                "certificate_type": "verified",
-                "certificate_title": "Verified Certificate",
-                "document_body_class_append": "is-idverified"
-            },
-            "xseries": {
-                "certificate_type": "xseries",
-                "certificate_title": "XSeries Certificate",
-                "document_body_class_append": "is-xseries"
+                "platform_name": "Your Platform Name Here",
+                "company_about_url": "http://www.example.com/about-us",
+                "company_privacy_url": "http://www.example.com/privacy-policy",
+                "company_tos_url": "http://www.example.com/terms-service",
+                "company_verified_certificate_url": "http://www.example.com/verified-certificate",
+                "logo_src": "/static/certificates/images/logo.png",
+                "logo_url": "http://www.example.com"
             },
             "base": {
                 "certificate_type": "base",
@@ -55,7 +40,10 @@ class Migration(DataMigration):
         )
 
     def backwards(self, orm):
-        "Write your backwards methods here."
+        """
+        Rolling back to zero-state, so remove all currently-defined configurations
+        """
+        orm.CertificateHtmlViewConfiguration.objects.all().delete()
 
     models = {
         'auth.group': {