Fixed the Mac app launcher
Fixed the Mac app launcher

This deals with a regression formerly fixed a while ago.  The Mac app
launcher should *not* pass along extra command-line arguments (unlike
the igv.sh and igv.command launchers).  When launched as a Mac app,
some versions of macOS will pass extra parameters through to the script
that are nonsensical to IGV.  Users with needs for that should use
those other scripts instead.
amwenger/igv,igvteam/igv,igvteam/igv,amwenger/igv,amwenger/igv,igvteam/igv,igvteam/igv,igvteam/igv,amwenger/igv,amwenger/igv