The view now draws edges as well.

And this shoes again the problem with large models and drawing edges.
The Graphics2D.drawLine method seems to be the bottleneck, which we
already saw in TrackMate.
Signed-off-by: Jean-Yves Tinevez <jeanyves.tinevez@gmail.com>
Move the interactive tests in the test source folder.

Signed-off-by: Jean-Yves Tinevez <jeanyves.tinevez@gmail.com>