Timestamps on apps / routes (#614)

* route updated_at

* add app created at, fix some route updated_at bugs

* add app updated_at

TODO need to add tests through front end
TODO for validation we don't really want to use the validate wrapper since
it's a programmer error and not a user error, hopefully tests block this.

* add tests for timestamps to exist / change on apps&routes

* route equals at done, fix tests wit dis

* fix up the equals sugar

* add swagger

* fix rebase

* precisely allocate maps in clone

* vetted

* meh

* fix api tests

docs/swagger.yml

@@ -516,6 +516,16 @@ definitions:
         default: 30
         format: int32
         description: Hot functions idle timeout before termination. Value in Seconds
+      created_at:
+        type: string
+        format: date-time
+        description: Time when route was created. Always in UTC.
+        readOnly: true
+      updated_at:
+        type: string
+        format: date-time
+        description: Most recent time that route was updated. Always in UTC.
+        readOnly: true
 
   App:
     type: object
@@ -529,6 +539,16 @@ definitions:
         description: Application configuration, applied to all routes.
         additionalProperties:
           type: string
+      created_at:
+        type: string
+        format: date-time
+        description: Time when app was created. Always in UTC.
+        readOnly: true
+      updated_at:
+        type: string
+        format: date-time
+        description: Most recent time that app was updated. Always in UTC.
+        readOnly: true
 
   Version:
     type: object