add missing file dashboard.py

authentic2_idp_oauth2/dashboard.py

@@ -0,0 +1,11 @@
+from django.utils.translation import ugettext_lazy as _
+
+from admin_tools.dashboard import modules
+
+
+def get_admin_modules():
+    '''Show Client model in authentic2 admin'''
+    model_list = modules.ModelList(_('OAuth2'),
+            models=('authentic2_idp_oauth2.models.A2Client',))
+    return (model_list,)
+