positioning of the fedstat graph

This is a followup on #4266 resizing the fedstat graph in the admin panel
so that it fits alongside the intro text again. Checked also with duepunto,
quattro and vier theme.

view/global.css

@@ -414,6 +414,7 @@ a {
 }
 .federation-graph {
   margin: 0 auto;
+	float: right;
 }
 .federation-network-graph {
   float: left;

view/templates/admin/federation.tpl

@@ -1,7 +1,7 @@
 <script src="{{$baseurl}}/vendor/asset/Chart-js/dist/Chart.min.js"></script>
-<canvas id="FederationChart" class="federation-graph" width="400" height="400"></canvas>
 <div id="adminpage">
     <h1>{{$title}} - {{$page}}</h1>
+    <canvas id="FederationChart" class="federation-graph" width="320" height="320"></canvas>
     <p>{{$intro}}</p>
     {{if not $autoactive}}
     <p class="error-message">{{$hint}}</p>