Changed all status to start with Uppercase letters, made 3 properties required. Changed all the status to start with Uppercase letters because they are publicly visible. Also changed required=True to False for created_by, modified_by property to allow site admin to create and modify tasks. Also changed required=True to False for history to allow history not to be written until the task is published.

Reverting last 4 patches containing GHOP related views. As Lennard suggested all the model patches should come first followed by the logic and views patches, to make sure nothing committed breaks the existing code after thorough review.