New: Can import members using assistant

ChangeLog

htdocs/adherents/card_subscriptions.php

htdocs/adherents/class/adherent.class.php

htdocs/contrat/fiche.php

htdocs/imports/import.php

htdocs/includes/modules/import/import_csv.modules.php

htdocs/includes/modules/modAdherent.class.php

htdocs/install/mysql/migration/2.9.0-3.0.0.sql

htdocs/install/mysql/tables/llx_adherent.sql

htdocs/install/mysql/tables/llx_categorie.sql

htdocs/langs/en_US/errors.lang

htdocs/langs/fr_FR/errors.lang

htdocs/lib/date.lib.php

htdocs/lib/files.lib.php

htdocs/lib/functions.lib.php

htdocs/public/paybox/newpayment.php

scripts/members/sync_members_ldap2dolibarr.php