Move #l from reporting helper to query utils, so it can be used in filters.

app/helpers/reporting_helper.rb

@@ -1,11 +1,6 @@
 module ReportingHelper
   include QueriesHelper
 
-  def l(*values)
-    return values.first if values.size == 1 and values.first.respond_to? :to_str
-    super
-  end
-
   ##
   # For a given CostQuery::Filter filter, return an array of hashes, that contain
   # the partials that should be rendered (:name) for that filter and necessary

app/models/cost_query/query_utils.rb

@@ -14,6 +14,11 @@ module CostQuery::QueryUtils
     end
   end
 
+  def l(*values)
+    return values.first if values.size == 1 and values.first.respond_to? :to_str
+    I18n.t(*values)
+  end
+
   def user_name(id)
     # we have no identity map... :(
     cache[:user_name][id] ||= User.find(id).name