network: better position for search box

circle/network/static/network/network.less

@@ -15,3 +15,7 @@
 .table-responsive {
   margin-top: 15px;
 }
+
+#network-host-list-form {
+  margin-top: 6px;
+}

circle/network/templates/network/host-list.html

@@ -33,8 +33,8 @@
     </ul>
   </div>
   <div class="col-md-3">
-    <form action="" method="GET">
-      <div class="input-group pull-right">
+    <form action="" method="GET" id="network-host-list-form">
+      <div class="input-group">
         <input type="text" id="network-host-list-input" name="s" class="form-control"
         value="{{ request.GET.s }}" placeholder="{% trans "Search..." %}"/>
         <span class="input-group-btn">