fixes image on budget table header

app/views/cost_objects/_list.rhtml

@@ -2,7 +2,7 @@
 
 <table class="list cost_objects">
   <thead><tr>
-    <th><%= link_to image_tag('toggle_check.png'), {}, :onclick => 'toggleIssuesSelection(Element.up(this, "form")); return false;',
+    <th><%= link_to image_tag('check.png'), {}, :onclick => 'toggleIssuesSelection(Element.up(this, "form")); return false;',
                                                        :title => "#{l(:button_check_all)}/#{l(:button_uncheck_all)}" %>
     </th>
     <%= sort_header_tag("id", :caption => '#', :default_order => 'desc') %>