Jenkins builds are stalling when generating PDFs for some morris tunes. I suspect the problem
may be an empty chord "" and abc2abc's attempt to transpose it.
I've been meaning to remove the chords from the horn output, because abc2abc transposes them too,
which renders them not terribly useful. So get on and do it. Also remove "" from the morris
tunes where it occurs.
And we get some playable tunes. We might be able to improve the transposition
further by taking the Cello approach of calculating the minimum distance outside
the comfortable range. One for the future.
1. Ensure makeWeb.sh gets its second parameter quoted, to allow for spaces in it.
2. Don't forget to copy the component text items into the horn dir.
3. Fix removing transposition tag from page title.