Guide to ask for recovering high fees paid to miner

[bucko13]

A way to replicate what is done in this post to help a Bitcoin user that accidentally paid 50BTC in fees: https://medium.com/@jimmysong/man-pays-50-btc-in-fees-please-help-5d161e8a75c6

[JustVic]

I make a try to solve this issue in pull request #171 .