Bug 5 fixed.

What was the root cause of the bug?
The reason was similar to Bug 3. Data needs to be sorted during fetch operation.

How did you fix the problem?
The desired output required AllModels to be sorted by first owner.ownerName then by modelId. Also in order to print the model with required formatting description function is added to ModelsEntity class. Also a more generic function named arrayForFetchRequestWithName:andSortDescriptors is added.