Couple of questions about theme 'Vulcan'

I have a couple of questions about theme ‘Vulcan’:

Url: https://www.reallogic.nl/business/1/

1) Between the box “CMS” and “Domein + hosting” i don’t see the dotted line anymore. How can i show the dotted line?

2) Laatste nieuws (right-bottom): I want to display here only posts from category “nieuws”. Below the code from latestnews.php:

<?php
                    $blog_cats_include = get_option('vulcan_blog_cats_include');
                    if(is_array($blog_cats_include)) {
                      $blog_include = implode(",",$blog_cats_include);
                    }
                    $listblog = new WP_Query("cat=$blog_include&showposts=4");
          					while ($listblog->have_posts()) : $listblog->the_post();
                  ?>
                    <li><a href="<?php the_permalink();?>"><?php the_title();?> - <strong><?php the_time('d F Y');?></strong></a></li>
                  <?php endwhile;wp_reset_query();?>

Url: https://www.reallogic.nl/business/1/contact/

3) The hyperlink from Google Maps will not be opened good. What is the problem here?

<div class="map">
                  <a rel="prettyPhoto[iframes]"  href="<?php echo ($gmap_source) ? $gmap_source : "https://maps.google.com/?ie=UTF8&ll=-6.230792,106.825991&spn=0.032167,0.082397&z=15&output=embed";?>?iframe=true&width=680&height=350" class="google-map" title="<?php bloginfo('blogname');?> on the map">
                  <img src="<?php echo ($info_map) ? $info_map : bloginfo('template_directory').'/images/map.jpg';?>" alt="" />
                  </a>
                  </div>

Url: https://www.reallogic.nl/business/1/blog/

4) Blog: How can i display here only the posts from category “nieuws”?

Thanks!