Created class ColorPaletteSourcesInfo.  This will store original cpdFileName, schemeName, as well as whether either has parameters which have subsequently been altered by the user such the that cpdFileName and/or schemeName may no longer precisely represent what is loaded in the imageInfo.  This enables adapting the GUI display accordingly.  This commit only creates the class and moves all variables from imageInfo and puts them into colorPaletteSourcesInfo.  The creation of this class cleans up imageInfo making it easier to determine it's difference with BEAM 5.0.