Refactor formatIncident to have less redudancy. Fix display for email services
Add 'pager incident NNNN' to make it easier to debug incidents. Fix formatIncident to not freak out if not assigned to someone
Document '/pager incident NNN'
Include triggering user's name for reference
Support pagerDutyIncidents specifying what statuses to return
Support acking and resolving multiple incidents
Add workflow for 'pager ack' acknowledging everything triggered and 'pager resolve' resolving everything that's acked
Merge pull request #1001 from github/pagerduty-improvements

PagerDuty improvements