core,oauth_provider: cleanup templates, add MFA error view

passbook/core/forms/rules.py

@@ -1,6 +1,7 @@
 """passbook rule forms"""
 
 from django import forms
+from django.utils.translation import gettext as _
 
 from passbook.core.models import DebugRule, FieldMatcherRule, WebhookRule
 
@@ -46,3 +47,6 @@ class DebugRuleForm(forms.ModelForm):
         widgets = {
             'name': forms.TextInput(),
         }
+        labels = {
+            'result': _('Allow user')
+        }