/usr/share/horde/ansel/templates/tile/dategallery.html.php is in php-horde-ansel 3.0.5+debian0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | <div class="gallery-tile">
<?php echo $this->contentTag('a', $this->tag('img', array('src' => $this->gallery_image, 'alt' => $this->caption)), array('href' => $this->view_link)) ?>
<div class="gallery-tile-caption"><?php echo $this->contentTag('a', $this->h($this->caption), array('href' => $this->view_link)) ?><div class="gallery-tile-count">(<?php echo $this->gallery_count ?>)</div></div>
</div>
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