Issue3088 - BFT Double Confirmation Requirment

Issue3090 - set producer relative location in regproducer

- this issue requires 2/3+1 of producers to implicitly agree on an
irreversible block before the block is marked as irreversible.

Issue3073 - old test code wasn't building

Fix mismatch error code with cleos error advice on DAWN 4.0

Improve abi_json_to_bin errors

Issue3070 - Tests to verify Bancor Math in RAM trade

delete unneccesary assert

Enable full nodeos test.

clean up the queued_write/out_queue.empty business

Ensure only one async_write at a time

fix typo

add the VOTEPRODUCER Ricardian contract