separate between entries and issues in filters view

git-svn-id: https://dev.finn.de/svn/cockpit/branches/reporting_merge@1280 7926756e-e54e-46e6-9721-ed318f58905e

app/views/cost_reports/_filters.rhtml

@@ -10,7 +10,9 @@
 <tr>
   <td>
     <table id="filter_table">
-    <% CostQuery::Filter.all.sort { |f1,f2| f1.applies_for.to_s <=> f2.applies_for.to_s }.each do |filter| %>
+    <% CostQuery::Filter.all_grouped.each do |label, filter_ary| %>
+      <tr id="tr_<%= label.to_s %>"><td><h3><%= l(label) %></h3></td></tr>
+      <% filter_ary.each do |filter| %>
         <tr id="tr_<%= filter.underscore_name %>" class="filter" style="display:none">
         <% html_elements(filter).each do |element| %>
           <%=
@@ -20,6 +22,7 @@
         <% end %>
         </tr>
       <% end %>
+    <% end %>
     </table>
   </td>
   <td class="add-filter">