Solved a bug when loading configuration files: the points used for the current...

Solved a bug when loading configuration files: the points used for the current filter were not cleared before adding the new ones.

src/main_gui.cpp

@@ -209,6 +209,7 @@ void MainGui::on_load_params_pressed(void)
 
   yaml_file = QFileDialog::getOpenFileName(this,tr("Open YAML file"), "./", tr("YAML Files (*.yaml)"));
   this->ui->params_file->setText(yaml_file);
+  this->node->clear_filter();
   this->node->load_params(yaml_file.toUtf8().constData());
   this->ui->pixel_list->clearContents();
   this->ui->pixel_list->setRowCount(0);