Adds created_on as available column on timelog list (#26396).

git-svn-id: http://svn.redmine.org/redmine/trunk@16828 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/time_entry_query.rb

@@ -23,6 +23,7 @@ class TimeEntryQuery < Query
   self.available_columns = [
     QueryColumn.new(:project, :sortable => "#{Project.table_name}.name", :groupable => true),
     QueryColumn.new(:spent_on, :sortable => ["#{TimeEntry.table_name}.spent_on", "#{TimeEntry.table_name}.created_on"], :default_order => 'desc', :groupable => true),
+    QueryColumn.new(:created_on, :sortable => "#{TimeEntry.table_name}.created_on", :default_order => 'desc'),
     QueryColumn.new(:tweek, :sortable => ["#{TimeEntry.table_name}.spent_on", "#{TimeEntry.table_name}.created_on"], :caption => l(:label_week)),
     QueryColumn.new(:user, :sortable => lambda {User.fields_for_order_statement}, :groupable => true),
     QueryColumn.new(:activity, :sortable => "#{TimeEntryActivity.table_name}.position", :groupable => true),