- added to FunctionBase: bool register_default_models (default true)

if true then winix will add default models for ezc templates such as "request", "item", etc.
- some methods from templates/item.cpp moved to Item

winixd/core/misc.cpp

@@ -1389,7 +1389,7 @@ using namespace misc_private;
 
 	tmp_qencode.clear();
 	QEncode(in, tmp_qencode);
-	tmp_qencode.to_string(out, clear);
+	tmp_qencode.to_str(out, clear);
 	tmp_qencode.clear();
 }