Fixes #107

Fixes [#107](https://github.com/CloudyKangaroo/cloudykangaroo/issues/107)

Fixed issue that prevented the silence stash from being created from attaching an event to a ticket. Rewrote /api/v1/sensu/events/filtered to include the stash contents in the event object. Updated /monitoring/events with columns from this output that are only shown when in views that include silenced events. Added Ticketed view.