Qual: Add more phpunit tests

dev/codesniffer/ruleset.xml

test/phpunit/AdherentTest.php

test/phpunit/AllTests.php

test/phpunit/BuildDocTest.php

test/phpunit/CMailFileTest.php

test/phpunit/CategorieTest.php

test/phpunit/ChargeSocialesTest.php

test/phpunit/CommandeFournisseurTest.php

test/phpunit/CommandeTest.php

test/phpunit/CommonObjectTest.php

test/phpunit/CompanyBankAccountTest.php

test/phpunit/ContratTest.php

test/phpunit/CoreTest.php

test/phpunit/Example_import_company_1.csv

test/phpunit/ExportTest.php

test/phpunit/FactureFournisseurTest.php

test/phpunit/FactureTest.php

test/phpunit/FunctionsTest.php

test/phpunit/ImportTest.php

test/phpunit/ModulesTest.php