Show weekly staking rewards

[crickhitchens]

When API3 token stakers go to their staking wallet page on the tracker, they expect to see the amount of their staking rewards listed for each week. The enormous site used to report these. Unfortunately, the new tracker doesn't display the weekly reward amount. The new tracker only displays the total amount of staked tokens for each week. So stakers need to subtract the previous week from the current week to determine the token rewards they received from staking.

It would be great if the actual amount of weekly rewards was reported.