Redesign the HistoryFilter in order to use colapsible fieldset instead of accordion layout.

static/plugin_event/src/grid/HistoryFilter.js

@@ -35,14 +35,11 @@ Ext.define('Event.grid.HistoryFilter', {
             people = [];
 
         // the arcordeon layout
-        me.layout = {
-            multi: true,
-            titleCollapse: true,
-            type: 'accordion'
-        };
+        me.layout = "anchor";
 
         me.defaults = {
-            frame: true
+            frame: true,
+            layout: "form"
         };
 
         // collect fields for each sub-panel
@@ -86,31 +83,42 @@ Ext.define('Event.grid.HistoryFilter', {
 
         // create the new item structure by adding sub-panel
         me.items = [{
-           title: me.textMetadata,
-           collapsed: false,
-           items: metadata
+            title: me.textMetadata,
+            collapsible: true,
+            collapsed: false,
+            items: metadata,
+            xtype: "fieldset"
         }, {
             title: me.textPeople,
+            collapsible: true,
             collapsed: true,
-            items: people
+            items: people,
+            xtype: "fieldset"
         }, {
             title: me.textObject,
+            collapsible: true,
             collapsed: true,
-            items: object
+            items: object,
+            xtype: "fieldset"
         }, {
             title: me.textEventData,
+            collapsible: true,
             collapsed: true,
-            layout: 'fit',
-            items: eventdata
+            items: eventdata,
+            layout: 'anchor',
+            xtype: "fieldset"
         }, {
             title: me.textPeriod,
+            collapsible: true,
             collapsed: true,
-            items: period
+            items: period,
+            xtype: "fieldset"
         }, {
             title: me.textFunding,
+            collapsible: true,
             collapsed: true,
-            layout: 'fit',
-            items: funding
+            items: funding,
+            xtype: "fieldset"
         }];
 
         // initialise the base class