thermostat: menu_dlg: make bigger buttons

soft/thermostat/src/menu_dlg.cpp

@@ -18,6 +18,10 @@
 MenuDlg::MenuDlg(QWidget *parent, Qt::WindowFlags f) :
 	QWidget(parent, f)
 {
+	QSizePolicy *szPolicy = new QSizePolicy(QSizePolicy::Minimum,
+						QSizePolicy::MinimumExpanding,
+						QSizePolicy::PushButton);
+
 	QGridLayout *mainLayout = new QGridLayout;
 
 	QPushButton *holiday_btn = new QPushButton(tr("Holidays"), this);
@@ -38,6 +42,12 @@ MenuDlg::MenuDlg(QWidget *parent, Qt::WindowFlags f) :
 	connect(back_btn, SIGNAL(clicked(void)), this, SIGNAL(closed(void)));
 	connect(exit_btn, SIGNAL(clicked(void)), this, SLOT(show_confirm_exit_dlg(void)));
 
+	holiday_btn->setSizePolicy(*szPolicy);
+	save_cfg_btn->setSizePolicy(*szPolicy);
+	load_cfg_btn->setSizePolicy(*szPolicy);
+	exit_btn->setSizePolicy(*szPolicy);
+	back_btn->setSizePolicy(*szPolicy);
+
 	this->setLayout(mainLayout);
 }