Adds support for saturday as the first week day (#7097).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5228 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -854,6 +854,8 @@ module ApplicationHelper
           'Calendar._FD = 1;' # Monday
         when 7
           'Calendar._FD = 0;' # Sunday
+        when 6
+          'Calendar._FD = 6;' # Saturday
         else
           '' # use language
         end