[license] Prevent single item from expanding

- the last item would expand vertically to fill the scroll area;
   add a spacer that pushes against it

src/modules/license/LicensePage.cpp

@@ -137,6 +137,7 @@ LicensePage::setEntries( const QList< LicenseEntry >& entriesList )
         m_entries.append( w );
         m_allLicensesOptional &= !entry.isRequired();
     }
+    ui->licenseEntriesLayout->addSpacerItem( new QSpacerItem( 10, 10, QSizePolicy::Minimum, QSizePolicy::Expanding ) );
 
     ui->acceptCheckBox->setChecked( false );
     checkAcceptance( false );

src/modules/license/LicenseWidget.cpp

@@ -68,6 +68,7 @@ LicenseWidget::LicenseWidget( LicenseEntry entry, QWidget* parent )
 
     QVBoxLayout* vLayout = new QVBoxLayout;
     QWidget* topPart = new QWidget( this );
+    topPart->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
     vLayout->addWidget( topPart );
 
     QHBoxLayout* wiLayout = new QHBoxLayout;
@@ -102,6 +103,7 @@ LicenseWidget::LicenseWidget( LicenseEntry entry, QWidget* parent )
         m_licenceTextLabel->setText( tr( "URL: %1" ).arg( m_entry.m_url.toDisplayString() ) );
         connect( m_viewLicenseButton, &QAbstractButton::clicked, this, &LicenseWidget::viewClicked );
     }
+    m_licenceTextLabel->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
 
     vLayout->addWidget( m_licenceTextLabel );
     setLayout( vLayout );