add user auth only to hidden projects

app/models/project.rb

@@ -120,7 +120,8 @@ class Project < ActiveRecord::Base
   def git_project_address auth_user
     host ||= EventLog.current_controller.request.host_with_port rescue ::Rosa::Application.config.action_mailer.default_url_options[:host]
     protocol = APP_CONFIG['mailer_https_url'] ? "https" : "http" rescue "http"
-    opts = {:host => host, :protocol => protocol, :user => auth_user.authentication_token, :password => ''}
+    opts = {:host => host, :protocol => protocol}
+    opts.merge!({:user => auth_user.authentication_token, :password => ''}) unless self.public?
     Rails.application.routes.url_helpers.project_url(self.owner.uname, self.name, opts) + ".git"
     #path #share by NFS
   end