refs #507, changed setup reader and simplied global setup and setup reader

* a single base URL (shared), derived URLs by appended path
* simplified dir structure shared with sub directories
* renamed functions
* automatically synchronize setup with DB when initialized
* trigger download info loading when setup is completed
* allow to automatically read after setup data have been synchronized
* read DB data when setup has been loaded
* allow to reload from threaded reader
* improved handling (log messages, skip reading) when data are not available

src/blackmisc/threadedreader.h

@@ -42,6 +42,10 @@ namespace BlackMisc
         //! \threadsafe
         void requestStop();
 
+        //! Request new reading
+        //! \note override as required, default is to call initialize()
+        virtual void requestReload();
+
         //! Destructor
         virtual ~CThreadedReader();
 
@@ -62,13 +66,16 @@ namespace BlackMisc
         void gracefulShutdown();
 
     protected:
-        //! Constructor
-        CThreadedReader(QObject *owner, const QString &name);
-
         QTimer *m_updateTimer        = nullptr;  //!< update timer
         std::atomic<bool> m_shutdown { false };  //!< in shutdown process
         mutable QReadWriteLock m_lock {QReadWriteLock::Recursive}; //!< lock which can be used from the derived classes
 
+        //! Constructor
+        CThreadedReader(QObject *owner, const QString &name);
+
+        //! When was reply last modified, -1 if N/A
+        qint64 lastModifiedMsSinceEpoch(QNetworkReply *nwReply) const;
+
         //! Shutdown in progress or finished
         bool isFinishedOrShutdown() const;