allow a request to be processed in a job

Now we allow a request to be passed into a job queue,
and after the job finishes the request is passed into
a controller again. In order to achieve this we have
a requests queue in System, when we put a request
to the job this Request structure is preserved in the
queue and for a new request a new Request is added to
the queue.

while here:
- remove App::Lock()/Unlock(), use scoped locking
- fix: Plugin now has a Call method which takes ModelConnector
  and a logger (used in multithreaded environment)
- BaseThread has a main_model_connector pointer
  to the main (from the main thread) model connector
- the FastCGI structure fcgi_request moved from App to Request
- some methods for handling requests moved from App to Request
- small refactoring in main.cpp
- add Http class (a http client)

winixd/functions/functionbase.cpp

@@ -167,6 +167,24 @@ void FunctionBase::Clear()
 
 
 
+void FunctionBase::ContinueMakePost()
+{
+	// do nothing by default
+}
+
+
+void FunctionBase::ContinueMakeGet()
+{
+	// do nothing by default
+}
+
+void FunctionBase::ContinueMakeDelete()
+{
+	// do nothing by default
+}
+
+
+
 } // namespace Winix