Added some error handling to controllers using the CRUDOperations insert.
Merge pull request #33 from FranciscoCanas/refactoring

Refactoring Model Traits
Merge branch 'master' into controllers

Conflicts:
	app/controllers/PackagesController.scala
	app/controllers/StatusesController.scala
	app/controllers/TasksController.scala
	app/controllers/WorkflowController.scala