Moved translated strings of 'register' and 'lost password' mail templates to lang files.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@832 e93f8b46-1217-0410-a6f0-8f06a7374b81

lang/zh.yml

@@ -78,7 +78,9 @@ notice_email_error: An error occurred while sending mail (%s)
 notice_feeds_access_key_reseted: Your RSS access key was reseted.
 
 mail_subject_lost_password: 您的redMine口令
+mail_body_lost_password: 'To change your Redmine password, click on the following link:'
 mail_subject_register: redMine帐户激活
+mail_body_register: 'To activate your Redmine account, click on the following link:'
 
 gui_validation_error: 1 个错误
 gui_validation_error_plural: %d 个错误