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/v2/synccontroller_v2.cpp

@@ -6,6 +6,9 @@
 #include "comic_db.h"
 #include "db_helper.h"
 
+using stefanfrings::HttpRequest;
+using stefanfrings::HttpResponse;
+
 SyncControllerV2::SyncControllerV2()
 {
 }