add missing Portuguese jQuery UI date picker (#13584)

jquery.ui.datepicker-pt.js is from
https://raw.github.com/jquery/jquery-ui/49f9b849b9c5023f13/ui/i18n/jquery.ui.datepicker-pt.js

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11686 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/integration/layout_test.rb

@@ -95,6 +95,16 @@ class LayoutTest < ActionController::IntegrationTest
       get '/issues'
       assert_include "/javascripts/i18n/jquery.ui.datepicker-zh-TW.js", response.body
     end
+
+    with_settings :default_language => 'pt' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-pt.js", response.body
+    end
+
+    with_settings :default_language => 'pt-BR' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-pt-BR.js", response.body
+    end
   end
 
   def test_search_field_outside_project_should_link_to_global_search