There is no need to throw or catch an obsolete exception ;-)

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Fix compilation error by relying on net.iharder:base64

The Eclipse here could not find the mxgraph class after importing
the project as Maven project.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Whoops... switch to SNAPSHOT version!

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>