scm: view: add parents and children on the revision page (#5501)

Contributed by Jan Topiński.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7721 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/locales/en.yml

@@ -823,6 +823,8 @@ en:
   label_issues_visibility_public: All non private issues
   label_issues_visibility_own: Issues created by or assigned to the user
   label_git_report_last_commit: Report last commit for files and directories
+  label_parent_revision: Parent
+  label_child_revision: Child
 
   button_login: Login
   button_submit: Submit