r21697@martha (orig r857): edenc | 2008-08-19 15:07:48 -0400

 re-added "field is required" messages
 r21698@martha (orig r858):  wreis | 2008-08-19 16:44:03 -0400
 nuked SiteLayout->http_header, should need of it since we have arg and %_
 r21700@martha (orig r860):  wreis | 2008-08-20 15:13:58 -0400
 Window->content_type is rw now
 r21701@martha (orig r861):  purge | 2008-08-20 17:08:00 -0400
 doctype support

diff --cc lib/Reaction/UI/ViewPort/Field/Role/Mutable.pm
Simple merge