* Change erasure to consume new RocksDb window
* Change tests for erasure
* Remove erasure from window
* Integrate erasure decoding back into window
* Remove corrupted blobs from ledger
* Replace Erasure result with result module's Result
* Add db_window module for windowing functions from RocksDb
* Replace window with db_window functions in window_service
* Fix tests
* Make note of change in db_window
* Create RocksDb ledger in bin/fullnode
* Make db_ledger functions generic
* Add db_ledger to bin/replicator
