We update the Logback-classic library to 1.2.13 (latest release of the
1.2.x branch). This requires a simultaenous update of SLF4J, because of
some incompatible changes between Logback 1.1 and 1.2.

Those are the latest versions we can update to, as newer branches 2.x
(for SLF4J) and 1.3.x (for Logback) rely on a completely different
initialisation mechanism that I currently cannot get to work with
Protégé.

Use a freshly built launcher that includes an option to silence a
warning about illegal reflective access on the part of the JGoodies
Common library.

Apply to the shell launcher the same logic as in the new updated
launcher: add a --add-opens option to silence the "illegal reflective
access" warning.