Refactor latest_status on Project
Refactor latest_status on Project

- Use the statuses association on project instead of getting the
  statuses for the project with a where scope.

dgodd/projectmonitor,remind101/projectmonitor,remind101/projectmonitor,remind101/projectmonitor,BuildingSync/projectmonitor,genebygene/projectmonitor,mabounassif/projectmonitor-docker,pivotal/projectmonitor,dgodd/projectmonitor,dgodd/projectmonitor,BuildingSync/projectmonitor,remind101/projectmonitor,genebygene/projectmonitor,mabounassif/projectmonitor-docker,BuildingSync/projectmonitor,mabounassif/projectmonitor-docker,BuildingSync/projectmonitor,pivotal/projectmonitor,pivotal/projectmonitor,dgodd/projectmonitor,genebygene/projectmonitor,pivotal/projectmonitor,mabounassif/projectmonitor-docker,genebygene/projectmonitor