#13 Add printing support to silverlight viewer

[andrus]

There is less-known hidden gem, Silverlight viewer and XAML rendering engine.

Now silverlight 4 has native printing support. So silverlight viewer should allow to print reports.
SL viewer should be re-written to make is as reusable control.
XAML rendering engine should be merged with other renderes so it can be used like others, eq. to generate XAML files.

Andrus.