adjust log level for dockwidget (#258)

Co-authored-by: Dominik Demuth <dominik.demuth@physik.tu-darmstadt.de>
Reviewed-on: #258

src/gui_qt/lib/logger.py

@@ -135,6 +135,7 @@ class QTextHandler(logging.Handler):
 
         self.console = ConsoleDock(parent)
         self.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
+        self.setLevel(logging.WARNING)
 
     def emit(self, record):
         msg = self.format(record)