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/readinglistscontroller_v2.cpp

@@ -4,6 +4,9 @@
 #include "reading_list.h"
 #include "yacreader_server_data_helper.h"
 
+using stefanfrings::HttpRequest;
+using stefanfrings::HttpResponse;
+
 ReadingListsControllerV2::ReadingListsControllerV2()
 {
 }