Galleria template with image title and GPS position

These changes are some small improvements on the galleria template. The one moving title infos to the layer is only a matter of taste.

The UserComment exif data is not the best defined thing in the world... we can face some weird values depending on the image editor.
Using a table is not a good idea, as it limits the width of the breadcrumb even if there is no icon.  You can simply wrap the icons in a div and push it to the right (`float: right` or a combination of position & inline-block):
```
          <div class="icons">
            <a class="gallery-map-toggle"><img src="{{ theme.url }}/img/map.png"/></a>
          </div>
 ```