Update server code integration for QtWebApp 1.7.11

- Adapt server code for QtWebapp namespace 'stefanfrings'
- Implement custom modifications needed by v1 controller
  via template engine
- Unify iphone and ipad templates

YACReaderLibrary/server/controllers/v1/sessioncontroller.cpp

@@ -8,6 +8,9 @@
 #include <QVariant>
 #include <QDateTime>
 
+using stefanfrings::HttpRequest;
+using stefanfrings::HttpResponse;
+
 SessionController::SessionController() { }
 
 void SessionController::service(HttpRequest &request, HttpResponse &response)