TODO:

* API
* Begin of the insertion[x]End of the insertion project\_statues endpoint
* GET /api/v3/project\_statuses/:id
* Begin of the insertion[ ]End of the insertion projects endpoints
* POST /api/v3/projects
* PATCH /api/v3/projects/:id
* GET /api/v3/projects/:id
* Begin of the insertion[ ]End of the insertion projects\_representer.rb
* resource :status
* reference represented directly instead of represented.status\_attributes
* property :status\_explanation
* switch to formattable\_property like done for `description`
* `from_hash` hack - remove
* Begin of the insertion[ ]End of the insertion projects services:
* SetAttributesService:
* `with_hack_around_faulty_enum` and `update_status` adapt to no longer nest status
* UpdateService:
* `persist_status` remove
* Begin of the insertion[ ]End of the insertion projects contracts:
* BaseContract
* `validate_status_code_included` adapt to no longer nest status Begin of the insertion

End of the insertion Begin of the deletion
End of the deletion * Begin of the insertion[ ]End of the insertion Extend database tables (code and explanation columns)
* projects
* project\_journals
* Begin of the insertion[ ]End of the insertion Migrate the existing data
* projects: Write values from project\_statues into table
* project\_journals: Write current values into existing journal files