boardSelectionActionGroup.setEnabled(false);
placementSelectionActionGroup = new ActionGroup(removePlacementAction);
placementSelectionActionGroup.setEnabled(false);
boardsTableModel = new BoardsTableModel(configuration);
placementsTableModel = new PlacementsTableModel(configuration);
JComboBox sidesComboBox = new JComboBox(Side.values());
setLayout(new BorderLayout(0, 0));