Add ability to manage and grant IAM permissions as policy

locale/en_US/iam.locale.js

@@ -1,4 +1,5 @@
 module.exports = exports = {
     policy_not_found: 'Policy not found with that ID.',
+    permission_not_found: 'Permission not found with that ID.',
     invalid_entity: 'Invalid entity_type. Must be one of:'
 }