* "header_tags" block added to allow inclusion of page specific tags in the html header (stylesheets, javascripts, feeds...)
git-svn-id: http://redmine.rubyforge.org/svn/trunk@121 e93f8b46-1217-0410-a6f0-8f06a7374b81
- validation of names and labels against /^[\w\s\'\-]*$/i
- html entities encoding
git-svn-id: http://redmine.rubyforge.org/svn/trunk@99 e93f8b46-1217-0410-a6f0-8f06a7374b81