parsing metadata.json

[kmccurley]

The metadata.json file comes from the events database, but may be lacking some fields and has dates in ISO standard 2021-08-21. If the template wants to show this as Aug 8,2021 then it needs to parse the date and reformat.

Second, the notificationdate may be null if it wasn't decided at the time that it's in the events database. The template should handle null values in the json and put out a warning (like editMe class). All fields should be checked for their presence (e.g, rebuttalDue).