Pushing down the voting power to be ready for Hard Fork 20

Just a quick note to let you know that we are temporarily letting Dusty vote below the normal threshold of 90% voting power.

As you probably know, HF20 is scheduled to go live in about 17 hours from now. Unforeseen things could happen and we could run into issues with @dustsweeper's voting. To avoid wasting VP and to give us some time to fix eventual issues, we have decided to let Dusty vote more freely. The voting power can now go as low as 50% and the per user, per round, voting limit, has been increased from 2 votes to 10.

This is a temporary measure and if all goes well with the HF we will revert back to normal again shortly after the HF.