As a user who cares treasury, I want to know more about bounty curators' behaviors

[wliyongfeng]

• Their history behaviors
• How much they benefit from the bounty
• How the community judge their work, give feedbacks

[wliyongfeng]

1st issue:

• How much curators benefit from a bounty in total?
• If there are multiple curators(multisig signatories usually), how much does each of them get?
• How many child bounties are created to pay for curators? And how many child bounties are there for each curator?