connect(copierNewPB, SIGNAL(clicked()), this, SLOT(new_copier()));
connect(copierRemovePB, SIGNAL(clicked()), this, SLOT(remove_copier()));
connect(copierModifyPB, SIGNAL(clicked()), this, SLOT(modify_copier()));
connect(copierNewPB, SIGNAL(clicked()), this, SLOT(new_copier()));
connect(copierRemovePB, SIGNAL(clicked()), this, SLOT(remove_copier()));
connect(copierModifyPB, SIGNAL(clicked()), this, SLOT(modify_copier()));