Consistency in model method naming

- The API has the BREAD naming for methods
- The model now has findAll, findOne, findPage (where needed), edit, add and destroy, meaning it is similar but with a bit more flexibility
- browse, read, update, create, and delete, which were effectively just aliases, have all been removed.
- added jsDoc for the model methods
Merge pull request #2688 from ErisDS/model-cleanup

Consistency in model method naming