A Rake task for to updating runs with `class_hash` info from portal export CSV.
A Rake task for to updating runs with `class_hash` info from portal export CSV.

Part of the large bug / feature story about adding `class_info_url` and `class_hash`
to runs and sequence runs launched from the portal.

We need to update existing runs in the DB with this information.

[#165217423]
https://www.pivotaltracker.com/story/show/165217423

concord-consortium/lara,concord-consortium/lara,concord-consortium/lara,concord-consortium/lara,concord-consortium/lara