Fix: strict mode palace

htdocs/admin/system/database-tables.php

htdocs/admin/system/dbtable.php

htdocs/admin/system/dolibarr.php

htdocs/admin/system/modules.php

htdocs/admin/system/phpinfo.php

htdocs/admin/tools/dolibarr_export.php

htdocs/admin/tools/dolibarr_import.php

htdocs/admin/tools/index.php

htdocs/admin/tools/listevents.php

htdocs/admin/tools/listsessions.php

htdocs/admin/tools/purge.php

htdocs/core/class/html.formfile.class.php

htdocs/support/index.php