fit range decimal precision handling of PMsrHandler improved (MUSR-150 request). musredit keeps now it last open directory

src/musredit/PTextEdit.h

@@ -146,6 +146,7 @@ private:
   QFileSystemWatcher *fFileSystemWatcher; ///< checks if msr-files are changing on the disk while being open in musredit.
   bool fFileSystemWatcherActive; ///< flag to enable/disable the file system watcher
   QTimer fFileSystemWatcherTimeout; ///< timer used to re-enable file system watcher. Needed to delay the re-enabling
+  QString fLastDirInUse; ///< string holding the path from where the last file was loaded.
 
   QAction *fMusrT0Action;