added: to config: 'content_type_header' parameter

the kind of "Content-Type" header send to the client
       if utf8 is enabled then 'charset=UTF-8' will also be appended
added: to templates: an index pattern for 'rawcontent'
       used when 'rawcontent' parameter is present
       by default the template has only one [content] ezc function
       useful in AJAX requests       


git-svn-id: svn://ttmath.org/publicrep/winix/trunk@784 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/app.h

@@ -152,6 +152,7 @@ private:
 	void FilterCompressSend(bool compressing, int compress_encoding, const std::wstring & source_ref);
 	bool SendHeadersStaticCreateResource();
 	void SendHeadersStatic();
+	void SendHeaderContentType();
 	void SendHeadersForbidden();
 	void SendHeadersRedirect();
 	void SendHeadersSendFile();