issue-210: replanning updates for actionTree

[zmknox]

Resolves issue: #210

Changes proposed in this pull request:

• Update offlineReplanning to support actionTree algorithm
  • This uses some randomness to help stop the algorithm from going down the same path all the time. This randomness can be seeded from the config with replanningSeed.
  • If you plan to use replanning with your existing actionTree models, you will likely need to update your models to better reflect how your website works, as opposed to expecting only one path to be taken. Future developments will allow this to be done easier.
• Updated reduce-to-minimum-set-of-plans to compare hashes of plans. In the past, it was comparing sets in a way which would never detect duplicates. In the future, it might be nice to compare sets to detect true supersets of plans.

@GannettDigital/simulato-core-contributors

[scottgunther]

A welcome addition! Here is some feedback.

[scottgunther]

Looking great!

Please add the documentation for the new option in the documentation. Thanks.