use QTreeView::repaint to update, instead of all the previous signalling mechanism

GUI/View/Job/JobsPanel.cpp

@@ -115,7 +115,7 @@ void JobsPanel::makeJobItemSelected(JobItem* item)
 void JobsPanel::onSelectedJobsChanged(const QVector<JobItem*>& jobs)
 {
     JobItem* new_job = jobs.size() == 1 ? jobs.front() : nullptr;
-    // m_properties_model->repaint ?? TODO
+    m_properties_view->repaint();
     m_messages_display->setJobItem(new_job);
     emit selectedJobsChanged();
 }