[xwiki-devs] set doctype for xwiki pages

Hi devs, the current templates for xwiki pages include a xhtml standard <DOCTYPE> for any html page generated which triggers the standard mode CSS interpretation in browsers (see http://www.quirksmode.org/css/quirksmode.html for details). This causes issues in applications that use GWT generated code (like XWatch) since GWT does not work properly in standards mode yet (see http://code.google.com/p/google-web-toolkit/issues/detail?id=1305 for details). I propose to parametrize the document type definition (its existance and type), thus allowing the developer to take control of the type of document it generates, for each generated page. The solutions would be: - using a request parameter to specify the doctype - using a $response function, just like $response.setContentType() to set the doctype at render time (this solution might require post processing to change the default generated doctype in the page). WDYT?