Create detail section with gallery.

    Args:
        title (str): Title to be displayed for detail section.
        images: stream of marv image files

    Returns
        One detail section.

def gallery_section(images, title):
    """Create detail section with gallery.

    Args:
        title (str): Title to be displayed for detail section.
        images: stream of marv image files

    Returns
        One detail section.
    """
    # pull all images
    imgs = []
    while True:
        img = yield marv.pull(images)
        if img is None:
            break
        imgs.append({'src': img.relpath})
    if not imgs:
        return

    # create gallery widget and section containing it
    widget = {'title': images.title, 'gallery': {'images': imgs}}
    section = {'title': title, 'widgets': [widget]}
    yield marv.push(section)