TT#100201 release_dashoard: proper column on list of supported relases

Change-Id: I338939738ff5ab0e1add794017da9864759d1448

release_dashboard/templates/release_dashboard/build_supported_releases.html

@@ -20,12 +20,12 @@
           </li>
         {% endfor %}
         </ul>
-        <div class="tab-content">
+      <div class="tab-content col-md-8">
         {% for base, data_list in releases_list %}
         <div role="tabpanel" class="tab-pane" id="{{base|cut:'.'}}">
-            <ul class="list-group" style="column-count: 4;">
+          <ul class="list-group row">
             {% for data in data_list %}
-              <li class="list-group-item {% if data.release in builds %}list-group-item-info{% endif %}">
+            <li class="list-group-item col-xs-2 {% if data.release in builds %}list-group-item-info{% endif %}">
               <a href="{% url 'release_dashboard:build_release' release=data.release %}">
                 {{ data.release }}
               </a>