refact 2

LibInstructorsAndTrainees/trainees/dialogredactortrainees.cpp

@@ -18,6 +18,7 @@ DialogRedactorTrainees::DialogRedactorTrainees(ConnectorToServer* connectorToSer
     layout->addWidget(editorTraineesGroups);
     this->setWindowTitle(tr("Editor of trainees"));
     this->setMinimumSize(1400, 700);
+    this->setWindowFlags(windowFlags() & ~Qt::WindowMinimizeButtonHint);
     //this->setWindowState(Qt::WindowMaximized);
     this->setModal(true);
 }