[task #217] Move core files in core directory

build/deb/conf.php.install

build/makepack-dolibarrmodule.conf

build/tgz/tar_exclude.txt

build/zip/zip_exclude.txt

dev/initdata/generate-propale.php

dev/skeletons/modMyModule.class.php

htdocs/adherents/cartes/carte.php

htdocs/admin/barcode.php

htdocs/admin/boxes.php

htdocs/admin/commande.php

htdocs/admin/confexped.php

htdocs/admin/contract.php

htdocs/admin/dons.php

htdocs/admin/expedition.php

htdocs/admin/facture.php

htdocs/admin/fichinter.php

htdocs/admin/fournisseur.php

htdocs/admin/livraison.php

htdocs/admin/menus.php

htdocs/admin/menus/edit.php