APY-126 Refactor blog collaborator type configuration
Work on APY-126 Refactor blog collaborator type configuration
Fixed mongodb entity delete operation
Merge pull request #118 from mihaigociu/apy-8-implement-x-filter

APY-126 Refactor blog collaborator type configuration
APY-121 : Polymorphic support for models
APY-121 : Polymorphic support for models
APY-131 : Add model description and update call documentation

Extended auto created documentation.