Attempt to add stats for pools.

[dialmaster]

I think if we know pool addresses we can simply treat transactions that transfer coins from a pool address to one of the receiving addresses a user has AS a "mining" payout. Then there would be no need to modify any pools to get basic stats for users. Look into this.
One example is for 'pdpd', who's receiving address is dy1qfpmnqncx6m8zm3uwd3vkuxay4mpp9aswjhhm3s from pool1.
I should test this locally first and verify with some people that the numbers line up.