Wiki page protection (#851, patch #1146 by Mateo Murphy with slight changes).
New permission added: protect wiki pages. Once a page is protected, it can be edited/renamed/deleted only by users who have this permission.
git-svn-id: http://redmine.rubyforge.org/svn/trunk@1415 e93f8b46-1217-0410-a6f0-8f06a7374b81
Jean-Philippe Lang