changed export js redirect to back to /export/ as this makes more sense

usability wise
Signed-off-by: Stacey Walker <stacey@catalyst.net.nz>

htdocs/export/download.php

@@ -106,6 +106,6 @@ $zipfile = $exporter->export();
 // but alas this is not possible for people without javascript.
 $SESSION->set('exportfile', $exporter->get('exportdir') . $zipfile);
 $wwwroot = get_config('wwwroot');
-$strexportgeneratedsuccessfullyjs = get_string('exportgeneratedsuccessfullyjs', 'export', '<a href="' . $wwwroot . '" target="_top">', '</a>');
+$strexportgeneratedsuccessfullyjs = get_string('exportgeneratedsuccessfullyjs', 'export', '<a href="' . $wwwroot . 'export/" target="_top">', '</a>');
 $strexportgeneratedsuccessfully   = get_string('exportgeneratedsuccessfully', 'export', '<a href="download.php" target="_top">', '</a>');
 print_export_footer($strexportgeneratedsuccessfully, $strexportgeneratedsuccessfullyjs);