FEAT #8934 add nl lang

apps/maarch_entreprise/lang/nl.php

modules/attachments/lang/nl.php

modules/avis/lang/nl.php

modules/basket/lang/nl.php

modules/cases/lang/nl.php

modules/content_management/lang/nl.php

modules/convert/lang/nl.php

modules/entities/lang/nl.php

modules/export_seda/lang/nl.php

modules/fileplan/lang/nl.php

modules/folder/lang/nl.php

modules/full_text/lang/nl.php

modules/life_cycle/lang/nl.php

modules/notes/lang/nl.php

modules/notifications/lang/nl.php

modules/reports/lang/nl.php

modules/sendmail/lang/nl.php

modules/tags/lang/nl.php

modules/templates/lang/nl.php

modules/thesaurus/lang/nl.php