v2.5.6

Behind-the-scenes updates for jQuery and track changes.

This release is under the 2.5 release:

Launching a new Dashboard and a big set of Editorial Workflow features! Full details at: https://scalar.me/anvc/all-new-editorial-workflow-features-debut-with-scalar-2-5

As always, make sure to check for changes to the database and config files before updating: https://github.com/anvc/scalar/wiki/Changes-to-config-files-over-time