it isn't safe to assume that symlinks created in the enabled/* dirs will
be symlinks later...
some users use tools like Dropbox to sync their files across systems,
and these may transform symlinks into regular files. explicitly
checking for symlinks with tests like [ -h $file ] will break on these
systems. these tests have been replaced with [ -e $file ] instead.
this replaces the naive implementation that called glossary() on each
group, and is an order of magnitude faster.
fix grouping in javascript.plugin.bash
Erich Smith
Travis Swicegood