Staking rewards aligned to tokenomics

Original Proposal Text

Raises the cumulative emission cap from 114,285,714.000000 to 590,000,000 QOR, the staking allocation in the tokenomics, and sets the fixed emission to 86,000 QOR per epoch (was 16,239.000000). At today's bonded stake this moves the staking yield from about 3% to the band the tokenomics allocation was designed to pay. Emission stays fixed per epoch, so the yield falls as more QOR is staked, and the cap keeps total emission within the allocation. Epoch length, mode and the schedule are unchanged.