Merge pull request #58 from JPeterMugaas/HtmlViewer11

Renamed some classes from the GDI unit and made that API more compatible...
Changed: do not print monochrome black.
Merge branch 'HtmlViewer11' of git@github.com:BerndGabriel/HtmlViewer.git into HtmlViewer11
Fixed: Cannot compile GPIPL2A.pas without conditional symbol HasGDIPlus
Revised: GPIPL2A.pas. Reduce number of differences between with or without HasGDIPlus.