* Refactor waitForActivation
* Finish refactor of runner.go
* Refactor validator/client/metrics.go
* Refactored beacon-chain/sync/pending_attestations_queue.go
* Refactored beacon-chain/powchain/log_processing.go
* Resolve conflicts with develop branch
* Fix Deepsource: Context should be the first param
* Address review comments
* Put headersMap as pass-in function parameter
* Change function signature of processBlockInBatch
* Address nisdas's comment