switch to hide/show for coppers, layer manager order, and fix presets handler

// some define to choose how copper layers widgets are shown

// if defined, displays only active copper layers

// if defined, display only active copper layers

// if not displays always 1=the full set (16 layers)

//#define HIDE_INACTIVE_LAYERS 

#define HIDE_INACTIVE_LAYERS

//if defined, uses the layer manager copper layers order (from FRONT to BACK)

// if defined, use the layer manager copper layers order (from FRONT to BACK)

// to display inner layers.

// if not, use the default order (from BACK to FRONT)

//#define USE_LAYER_MANAGER_COPPER_LAYERS_ORDER

#define USE_LAYER_MANAGER_COPPER_LAYERS_ORDER

/**

    for( layer=LAYER_N_2; layer < NB_COPPER_LAYERS-1;  ++layer, --copperCount )

    {

        bool state = copperCount > 0;

#ifdef HIDE_INACTIVE_LAYERS

    // This code hide non active copper layers

        // This code hides non-active copper layers, or redisplays hidden

        // layers which are now needed.

        CTLs ctl = getCTLs( layer );

        ctl.name->Show( state );

        ctl.checkbox->Show( state );

        ctl.choice->Show( state );

        if( ctl.panel )

            ctl.panel->Show( state );

#endif

    // user may not change copper layer checkboxes from anything other than

    // either presets choice or the copper layer choice controls.

    // I tried to simply diable the copper CheckBoxes but they look like crap,

    // I tried to simply disable the copper CheckBoxes but they look like crap,

    // so leave them enabled and reverse the user's attempt to toggle them.

    setCopperLayerCheckBoxes( m_CopperLayerCount );

        }

        m_CopperLayerCount = copperCount;

        showCopperChoice( m_CopperLayerCount );

        showSelectedLayerCheckBoxes( m_EnabledLayers );

        setCopperLayerCheckBoxes( m_CopperLayerCount );

    }

}