Implement and enable option to not shove vias during push & shove routing

pcbnew/dialogs/dialog_pns_settings.cpp

@@ -55,7 +55,6 @@ DIALOG_PNS_SETTINGS::DIALOG_PNS_SETTINGS( wxWindow* aParent, PNS::ROUTING_SETTIN
 
     // Don't show options that are not implemented
     m_suggestEnding->Hide();
-    m_shoveVias->Hide();
 
     SetDefaultItem( m_stdButtonsOK );
     GetSizer()->Fit( this );

pcbnew/dialogs/dialog_pns_settings_base.cpp

@@ -29,7 +29,6 @@ DIALOG_PNS_SETTINGS_BASE::DIALOG_PNS_SETTINGS_BASE( wxWindow* parent, wxWindowID
 	bOptions->Add( m_freeAngleMode, 0, wxTOP|wxRIGHT|wxLEFT, 5 );
 
 	m_shoveVias = new wxCheckBox( bOptions->GetStaticBox(), wxID_ANY, _("Shove vias"), wxDefaultPosition, wxDefaultSize, 0 );
-	m_shoveVias->Enable( false );
 	m_shoveVias->SetToolTip( _("When disabled, vias are treated as un-movable objects and hugged instead of shoved.") );
 
 	bOptions->Add( m_shoveVias, 0, wxTOP|wxRIGHT|wxLEFT, 5 );

pcbnew/router/pns_shove.cpp

@@ -880,7 +880,7 @@ SHOVE::SHOVE_STATUS SHOVE::pushOrShoveVia( VIA* aVia, const VECTOR2I& aForce, in
         return SH_INCOMPLETE;
     }
 
-    if( aVia->IsLocked() )
+    if( Settings().ShoveVias() == false || aVia->IsLocked() )
         return SH_TRY_WALK;
 
     if( jt->IsLocked() )