Amend add_paperclip_checksums for cronjob
Amend add_paperclip_checksums for cronjob

* Add condition for prompting to add_paperclip_checksums
  So it can be run unattended via a k8s cronjob.

* Amend output to include "limit" applied to relation
  So running this task with 'no_prompt' argument will
  output the record limit to logs.

* Call storage:status task after adding checksums
  So cronjob outputs results after running the
  add checksums task. This is useful for cronjobs
  that are only intended to run a singular
  command and it is hacky to get them
  to run a separate command afterward.

  The cronjob can now just run the command below
  to add the checksums and report on the result.

  ```
  bundle exec rails "storage:add_paperclip_checksums[documents,10000,no_prompt]"
  ```

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