Acquaint recent changes in BDV.

In particular, we need now to track the towards-spimdata branch of the
spim-viewer to make this work.
This fix is just a rough patch; we do not exploit the new framework
built by Tobias and Stephan.
Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Merge branch 'master' into towards-spimdata

Conflicts:
	src/main/java/fiji/plugin/mamut/MaMuT.java

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