DPR, Brahmajala Sutta

Sorry, as it turns out, I didn't fix the index bug in the end.  It is
fixed now in the latest version, afaics (0.962).

I've also added the abhidhammattha-sangaha and its tika, which should be
the last of the texts to add before a 1.0b release.

I'm sorry I haven't begun the Brahmajala project, I've been a little
preoccupied.  Should clear up soon, and I'll be memorizing and posting
again.