fixed value for 'Content-Type' HTTP meta header is repeated (closes #2557)
fixed value for 'Content-Type' HTTP meta header is repeated (closes #2557)

git-svn-id: 8f5d9a3975ba0af110251f601dfadfacaf171662@6649 ee427ae8-e902-0410-961c-c3ed070cd9f9

catchamonkey/symfony-1.0,catchamonkey/symfony-1.0,catchamonkey/symfony-1.0