Refactored endpoint to get summit push notifications
GET /api/v1/summits/{id}/notifications
* Expands
** owner
** approved_by
* Filters
** channel ['=='] (sometimes|in:EVERYONE,SPEAKERS,ATTENDEES,MEMBERS,SUMMIT,EVENT,GROUP)
** sent_date ['>', '<', '<=', '>=', '=='] (sometimes|date_format:U)
** created ['>', '<', '<=', '>=', '=='] (sometimes|date_format:U)
** is_sent ['=='] (sometimes|boolean)
** approved ['=='] (sometimes|boolean)
** event_id ['=='] (sometimes|integer)
* Order
** sent_date
** created
** id
Change-Id: Idb93b9a12817c3385150cbb69914b3a089ace6d1
651a16d8d2