TimeDisplayWidget: expand all LcdWidgets to 3 digits

Most songs have more than 99 bars and in some situations also more
than 99 ticks.

Thanks to Vesa for pointing out this issue.

src/gui/widgets/TimeDisplayWidget.cpp

@@ -36,8 +36,8 @@ TimeDisplayWidget::TimeDisplayWidget() :
 	QWidget(),
 	m_displayMode( MinutesSeconds ),
 	m_spinBoxesLayout( this ),
-	m_majorLCD( 2, this ),
-	m_minorLCD( 2, this ),
+	m_majorLCD( 3, this ),
+	m_minorLCD( 3, this ),
 	m_milliSecondsLCD( 3, this )
 {
 	m_spinBoxesLayout.setSpacing( 0 );