Tweaks: made bit8-merge-mine a feature, not an attr.
Revert redundant fix.
Renamed ppc_proof_of_stake as nvc_ since I am not sure PPC is compatible.
NovaCoin proof-of-stake: front-end changes.
Illustrate datadir "conf" element and simple NovaCoin datadir usage.
Fix datadir.conf handling.
Made conf file name and rpcport properties of Chain.
Improve datadir examples.
Don't crash on page-not-found or chain-not-found.
Added comment.