[FIX] event: avoid double "Publish" button

The event.track view wa sextending the event.event view which was adding action buttons linked to the event.event object instead of the track.
This patch uses the general website view to avoid the confusion (and the risk of publishing an event instead a track).

addons/website_event_track/views/website_event.xml

@@ -173,12 +173,25 @@
 
 
 <template id="track_view">
-    <t t-call="website_event.layout">
+    <t t-call="website.layout">
+        <div id="wrap" class="js_event">
+            <div class="container">
+                <div class="row mt8">
+                    <div class="col-sm-7" id="event_menu">
+                        <ol class="breadcrumb mb0" id="event_menu" t-if="event.menu_id">
+                            <t t-foreach="event.menu_id.child_id" t-as="submenu">
+                                <t t-call="website.submenu"/>
+                            </t>
+                        </ol>
+                    </div>
+                    <t t-call="website.publish_management">
+                        <t t-set="object" t-value="track"/>
+                        <t t-set="publish_edit" t-value="True"/>
+                    </t>
+                </div>
+            </div>
+        </div>
         <div class="container">
-            <t t-call="website.publish_management">
-                <t t-set="object" t-value="track"/>
-                <t t-set="publish_edit" t-value="True"/>
-            </t>
             <div class="clearfix"/>
 
             <h2 t-field="track.name" class="text-center"/>