MailHandler: Match assignee on the full display name (#11552).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10236 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/mail_handler.rb

@@ -468,7 +468,7 @@ class MailHandler < ActionMailer::Base
                    }
     end
     if assignee.nil?
-      assignee ||= assignable.detect {|a| a.is_a?(Group) && a.name.downcase == keyword}
+      assignee ||= assignable.detect {|a| a.name.downcase == keyword}
     end
     assignee
   end