* Updated Mapper#push documentation
* Renamed :parent_menu to :parent
* Renamed the external API for :child_menus to :children. Internally it needs
to stay :child_menus because Tree::TreeNode already defines a children
method for another purpose
#4250
git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3092 e93f8b46-1217-0410-a6f0-8f06a7374b81