Changes to endpoints to utilize pool_stat (now core) table instead of… (#401)
## Description First set of changes to make use of out-of-the-box pool_stat table instead of relying on grest.pool_active_stake_cache. Once these are reviewed and tested we can have a go at disabling the logic associated with that cache population and anything that depends on it (e.g. currently it is responsible for keeping a control_table record updated that at least one other cron job/cache depends on) ## Which issue it fixes? <!--- Link to issue: Closes #issue-number --> --------- Co-authored-by: hodlonaut <[email protected]> Co-authored-by: Dostrelith <[email protected]>