Hide raid plugin if no data

glances/outputs/static/html/stats.html

@@ -51,7 +51,7 @@
                 <section id="network" class="plugin table-row-group" ng-show="show.network" ng-include src="'plugins/network.html'"></section>
                 <section id="diskio" class="plugin table-row-group" ng-show="show.diskio" ng-include src="'plugins/diskio.html'"></section>
                 <section id="fs" class="plugin table-row-group" ng-show="show.fs" ng-include src="'plugins/fs.html'"></section>
-                <section id="raid" class="plugin table-row-group" ng-show="show.fs" ng-include src="'plugins/raid.html'"></section>
+                <section id="raid" class="plugin table-row-group" ng-show="statsRaid.hasDisks()" ng-include src="'plugins/raid.html'"></section>
                 <section id="sensors" class="plugin table-row-group" ng-show="show.sensors && statsSensors.sensors.length > 0" ng-include src="'plugins/sensors.html'"></section>
             </div>
         </div>

glances/outputs/static/js/services/plugins/glances_raid.js

@@ -30,6 +30,10 @@ glancesApp.service('GlancesPluginRaid', function () {
         }, this);
     };
 
+    this.hasDisks = function() {
+        return this.disks.length > 0;
+    }
+
     this.getAlert = function(disk) {
         if (disk.inactive) {
             return 'critical';