FEAT #7731 Unit Tests + Refactoring

apps/maarch_entreprise/actions/sendFileWS.php

core/Test/DocserverControllerTest.php

modules/visa/sign_file.php

phpunit.xml

src/app/docserver/controllers/DocserverTypeController.php

src/app/docserver/models/DocserverModelAbstract.php

src/app/docserver/models/DocserverTypeModelAbstract.php

src/app/group/models/GroupModelAbstract.php

...app/signatureBook/controllers/SignatureBookController.php

src/app/template/controllers/TemplateController.php

src/app/user/controllers/UserController.php