cosmetic changes, esp. for mobile

wrap host view into container div (otherwise the top headline hangs out of the screen on the left)
make ipv6 addr a bit smaller, so it might better fit on not-so-wide screens

nsupdate/main/templates/main/home.html

@@ -10,7 +10,7 @@
                 <h1>{{request.session.ipv4}}</h1>
         {% endif %}
         {% if request.session.ipv6 %}
-            <h2>{{request.session.ipv6}}</h2>
+            <h3>{{request.session.ipv6}}</h3>
         {% endif %}
         <p>
             nsupdate.info - the Dynamic DNS service you waited for.

nsupdate/main/templates/main/host.html

@@ -2,7 +2,7 @@
 {% load bootstrap %}
 
 {% block content %}
-
+<div class="container">
     <div class="row">
         <h3>{{ host.get_fqdn }} <br><small><a href="{% url 'overview' %}"><i class="icon-double-angle-left"></i> back to overview</a></small></h3>
         <div class="col-lg-4">
@@ -72,4 +72,5 @@
             </script>
         </div>
     </div>
+</div>
 {% endblock %}