Created ObjectCreator interface, model and class
Added tests for person's first name
Corrected person's firstname case
Corrected person's lastname case
Added forgotten methods for personAlias
Added test for person's alias
Corrected display name test
Modified display name when an alias and names are given
doc fix
Separated people and firms as ObjectCreator's
Added tests for Firm ObjectCreator
Created tables relative to ObjectCreators' entities
Drops and creates database before each test suite
Added a slug field for links