Blob Edit asynchronous task. Now it just needs building debugging testing?
Rework the rewrite nupkg blobs task to work in terms of database.
Convert the task to a DatabaseAndStorageTask
CR feedback - use Dapper for cleaner sql code and use FetchAttributes to update the blobs copy state.
Fix the casing of backup blob names, also putting them in 'subdirectories' so they can be easily found, and use a naming convention which won't have potential filename clashes for package ids with funky dots in them.
Bugfix - when an edit is completed, the packages table must also be updated to point to the completed edit.
NRE fix regarding blob.CopyState