Sorry, but I don't subscribe to the Nag list.....
In /templates/list/header.inc
Line 12
<?= Horde::img('refresh.gif', _("Refresh List"), 'hspace="2"') ?></a>
Should be:
<?= Horde::img('refresh.gif', 'alt="' . _("Refresh List") . '"h
space="2"') ?></a>
..the refresh icon otherwise does not show.
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-Barry Flanagan