Person Statuses

* Fixed privacy issues with other users being able to view pings/pongs to a person by another user
* Dashboard will now let them know that there's an alternate status by another user
* Manually update a person's status
* Add notes to a manually updated status
* closes #71
* closes #72
Merge branch 'master' of github.com:ushahidi/pingapp into person-status-dev
Merge pull request #89 from ushahidi/person-status-dev

Person status dev