Fix display of the Browse page when right list is shorter

src/Packagist/WebBundle/Resources/views/Web/explore.html.twig

@@ -18,6 +18,8 @@
             {{ macros.listPackagesShort(newlySubmitted) }}
         </section>
 
+        <div class="clearfix visible-lg-block"></div>
+
         <section class="packages-short col-lg-6">
             <h3>Popular Packages <a href="{{ path('browse_popular') }}">View All</a></h3>