Witness node maintenance - Upgrade to 0.20.5

Just disabled the witness temporarily to upgrade it to 0.20.5. I was out for the weekend, and it's already we have two new minor steemd versions on that timeframe.

Edit: Back online with 0.20.5

Looks like the resource credits/mana system will take some time until we find the sweet spot in the internal economics. Replaying will be finished around 4 hours from that post. (I will update the post and reactivate the witness after that.)

Meanwhile;