General
 - general C#-ification

DemoMain
 - syntax highlighting
 - use reflection to fill the tree/launch demos

DemoStockBrowser
 - underline _label properly
 - use StudlyCaps instead of current horrible hack
 - missing stockitems for some reason
 - remove duplication in ListStore, and use DataFunc's

DemoHyperText
 - finish

DemoEntryCompletion
 - set the model