Add Watermark constructor on every skin, add changeWatermark method in SubstanceLookAndFeel

Add Watermark in constructor and changeWatermark in SubstanceLookAndFeel

Create a Skin with Watermark: SubstanceSkin skin = new DustSkin(getSubstanceImageWatermark()); SubstanceSkin skin2 = new OfficeBlue2007Skin(getSubstanceImageWatermark());

Change the Watermark: SubstanceLookAndFeel.changeWatermark(getSubstanceImageWatermark());