Adding asterisk suffix to mapped menu commands.

Example:

    Red Example Score (2013) - segments

        go - back (b)                                      system - LilyPond log (ll)
        go - home (h)                                      system - Python (pyi)
        go - score (s)                                     system - commands (?)
                                                           system - doctest (pyd)
        go - next score (>>)                               system - pytest (pyt)
        go - next asset (>)                                system - quit (q)
        go - previous score (<<)                           system - session variables (sv)
        go - previous asset (<)                            system - shell (!)

        go - build (u)                                     views - apply (va)
        go - distribution (d)                              views - clear (vc)
        go - makers (k)                                    views - list (vls)
        go - materials (m)                                 views - new (vnew)
        go - segments (g)                                  views - remove (vrm)
        go - stylesheets (y)                               views - rename (vren)
                                                           views.py - open (vmo)
        go - edit score stylesheet (ess)

        metadata - add (mda)
        metadata - get (mdg)
        metadata - remove (mdrm)
        metadata.py - open (mdpyo)
        metadata.py - rewrite (mdpyrw)

        package - initializer - open (ino)
        package - initializer - write stub (inws)

        repository - add (rad)
        repository - clean (rcn)
        repository - commit (rci)
        repository - revert (rrv)
        repository - status (rst)
        repository - update (rup)

        segments - copy (cp)
        segments - new (new)
        segments - remove (rm)
        segments - rename (ren)

        segments - definition.py - edit (dpye*)
        segments - make.py - interpret (mpyi*)
        segments - metadata.py - open (mdpyo*)
        segments - output.ly - interpret (olyi*)
        segments - output.pdf - open (opdfo*)
        segments - version (ver*)

    >