Minor cosmetics on the edge example.

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Merge branch 'master' of github.com:fiji/TrackMate-examples

Conflicts:
	src/main/java/plugin/trackmate/examples/edgeanalyzer/EdgeAngleAnalyzer.java

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>