Notification endpoints and url expositions

Also some changes to the footprint of the notification handler classes

awx/main/models/notifications.py

@@ -4,6 +4,9 @@
 import logging
 
 from django.db import models
+from django.core.urlresolvers import reverse
+from django.utils.translation import ugettext_lazy as _
+
 from awx.main.models.base import * # noqa
 from awx.main.notifications.email_backend import CustomEmailBackend
 from awx.main.notifications.slack_backend import SlackBackend
@@ -14,6 +17,8 @@ from jsonfield import JSONField
 
 logger = logging.getLogger('awx.main.models.notifications')
 
+__all__ = ['NotificationTemplate']
+
 class NotificationTemplate(CommonModel):
 
     NOTIFICATION_TYPES = [('email', _('Email'), CustomEmailBackend),
@@ -32,6 +37,9 @@ class NotificationTemplate(CommonModel):
 
     notification_configuration = JSONField(blank=False)
 
+    def get_absolute_url(self):
+        return reverse('api:notification_template_detail', args=(self.pk,))
+
     @property
     def notification_class(self):
         return CLASS_FOR_NOTIFICATION_TYPE[self.notification_type]