Bug 26098: Fix JS error on the fund list view when no fund displayed

TypeError: this.data(...) is undefined
in jquery.treetable.js

Test plan:
Go to the fund list view
Select a filter that will return no result
=> With this patch applied there is no JS error in the console

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt

@@ -620,6 +620,7 @@
         //<![CDATA[
             //
             $(document).ready(function() {
+                [% IF budgets %]
                     var oTable = $("#budgeth").dataTable($.extend(true, {}, dataTablesDefaults, {
                         "fnDrawCallback": function ( oSettings ) {
                             if ( oSettings.aiDisplay.length == 0 )
@@ -687,6 +688,7 @@
                       $("#hide_inactive").click();
                     [% END %]
                     oTable.fnAddFilters("filter", 750);
+                [% END %]
 
                 $("#filterbutton").click(function() {
                     $("#fundfilters").slideToggle(0);