Create new Viewer module

[GoogleCodeExporter]

The slice3dVWR is one of the oldest and most complex modules in DeVIDE, and
it's starting to show.

I'm slowly starting to think up a design for the next generation Viewer
module that will eventually act as replacement for the slice3dVWR.

My current vision is that of a compact core, with plugins for performing
all functionality.  The core will only take care of basic house-keeping
(input and output administration for example), whilst plugins will take
care of the rest.

Each plugin can optionally create a wx panel that will be integrated in a
tabbed interface.  For example, all polydata objects will be managed by the
polydata_objects plugin.  Segmentation overlays will be done by the, err,
segmentation_overlay module, and so forth.

Original issue reported on code.google.com by cpbotha on 23 Jul 2008 at 6:52

[GoogleCodeExporter]

I'm putting notes concerning the design of the new Viewer on the [ViewerNG] 
wiki page.

Original comment by cpbotha on 24 Jul 2008 at 7:58

[GoogleCodeExporter]

I meant http://code.google.com/p/devide/wiki/ViewerNG of course (comments don't 
take
wikisyntax it would seem).

Original comment by cpbotha on 24 Jul 2008 at 8:00