Add method to test Jekyll plugins
In order to have a bit more confidence in how our plugins are working, we should be able to drive in some testing such that they can be run before and as part of CI
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
In order to have a bit more confidence in how our plugins are working, we should be able to drive in some testing such that they can be run before and as part of CI