Grab photo capture date and captions from EXIF/IPTC data.

- Add a "captured" column to the items table.
- Pull the DateTime EXIF field and put it into the captured column
- Pull the Caption EXIF & IPTC fields and put them into the description
  field if there was not already a value there

modules/info/views/info_block.html.php

@@ -17,6 +17,12 @@
       <td><?= $item->name; ?></td>
     </tr>
     <? endif ?>
+    <? if ($item->captured): ?>
+    <tr>
+      <th><?= t("Captured:") ?></th>
+      <td><?= date("M j, Y H:i:s", $item->captured)?></td>
+    </tr>
+    <? endif ?>
     <? if ($item->owner): ?>
     <tr>
       <th><?= t("Owner:") ?></th>