rearchitecting (may 2014)
update the README to reflect the new code
#
usage examples.  mention bootstrap.dat.
example: db.by_num() call is more useful than db.num_block
mention ripemd160 issue
python-ecdsa now support SECP256k1 natively
not needed, shrapnel has coro.backdoor
not needed: paper_key is in its own repository now (https://github.com/samrushing/paper_key)
I'd rather remove unused code than #*@!ing pep8 it
placate the fascist pep8 fundamentalists.

...at least as much as I can handle today.
tweak example
cmd_block: fix 'next block' link.
BlockHoover.go: handle empty-db case
args.webadmin -> args.webui
sanity check block names
put the default webui ip/port back [need to add options for auth user/pass]
rel=noreferrer on blockexplorer/blockchain links
BlockDB.next(): synthesize this info.
thead-dog-food, ent() fun.
use html_help utils for generation.