Minor changes in modules categories

htdocs/admin/modules.php

htdocs/admin/system/dolibarr.php

htdocs/includes/modules/modBarcode.class.php

htdocs/includes/modules/modBookmark.class.php

htdocs/includes/modules/modBoutique.class.php

htdocs/includes/modules/modDocument.class.php

htdocs/includes/modules/modDroitPret.class.php

htdocs/includes/modules/modECM.class.php

htdocs/includes/modules/modFckeditor.class.php

htdocs/includes/modules/modSyslog.class.php

htdocs/langs/en_US/admin.lang

htdocs/langs/fr_BE/admin.lang

htdocs/langs/fr_FR/admin.lang