add performance graphs to serverinfo

move serverinfo-bar to seperate file
add serverinfo fps chart 
add network i/o chart

html/header.html

@@ -0,0 +1,40 @@
+<nav class="navbar navbar-default" ng-controller="ServerInfoController" ng-show="serverinfo">
+  <div class="container">
+    <div class="navbar-header">
+      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar-collapse-header" aria-expanded="false">
+        <span class="sr-only">Toggle navigation</span>
+        <span class="icon-bar"></span>
+        <span class="icon-bar"></span>
+        <span class="icon-bar"></span>
+      </button>
+
+      <a class="navbar-brand" href="#">{{serverinfo.Hostname}}</a>
+    </div>
+
+    <div class="collapse navbar-collapse" id="navbar-collapse-header">
+      <p class="navbar-text" title="Uptime">
+        <span class="glyphicon glyphicon-time"></span>
+        {{serverinfo.Uptime|SecondsToDuration}}
+      </p>
+      <p class="navbar-text" title="Map Name">
+        <span class="glyphicon glyphicon-globe"></span>
+        {{serverinfo.Map}}
+      </p>
+      <p class="navbar-text" title="Current Players/Maximum Players">
+        <span class="glyphicon glyphicon-user"></span>
+        {{serverinfo.Players|number}}/{{serverinfo.MaxPlayers|number}}
+      </p>
+      <p class="navbar-text" title="Framerate">
+        <span class="glyphicon glyphicon-hourglass"></span>
+        {{serverinfo.Framerate|number}}fps
+      </p>
+      <p class="navbar-text" title="Entity Count">
+        <span class="glyphicon glyphicon-oil"></span>
+        {{serverinfo.EntityCount|number}}
+      </p>
+
+      <button class="btn btn-danger navbar-btn navbar-right" type="button" ng-click="Disconnect()">Disconnect</button>
+
+    </div>
+  </div>
+</nav>