replace scm to SCM at locale files (#13438)

Contributed by Filou Centrinov.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11599 e93f8b46-1217-0410-a6f0-8f06a7374b81
replace scm to SCM at config/configuration.yml.example (#13438)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11600 e93f8b46-1217-0410-a6f0-8f06a7374b81
replace English setting_emails_header and setting_emails_header translation (#13438)

Contributed by Filou Centrinov.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11601 e93f8b46-1217-0410-a6f0-8f06a7374b81