fix deprecations in admin reports

app/assets/javascripts/admin/templates/reports.hbs

@@ -1,4 +1,4 @@
-<h3>{{title}}</h3>
+<h3>{{model.title}}</h3>
 
 <div>
   {{i18n 'admin.dashboard.reports.start_date'}} {{input type="date" value=startDate}}
@@ -24,11 +24,11 @@
 {{#conditional-loading-spinner condition=refreshing}}
   <table class='table report'>
     <tr>
-      <th>{{xaxis}}</th>
-      <th>{{yaxis}}</th>
+      <th>{{model.xaxis}}</th>
+      <th>{{model.yaxis}}</th>
     </tr>
 
-    {{#each row in dataReversed}}
+    {{#each row in model.dataReversed}}
       <tr>
         <td>{{row.x}}</td>
         <td>