Fix/new version decision data and configuration

The following issues are addressed in this MR

1. The config flag is made optional, if its value is not present, it won't break the workflow
2. The decision value of the manuscript object was set to null, due to which the first version always had an empty decision value. As we are checking the manuscript.decision to remove form fields except for threaded discussion, for the first version, those fields are never displayed. The manuscript.decision is not being used elsewhere, hence I have removed it from the query
3. There was a typo in manuscript status, which is corrected. For a long term to make these strings consistent, I believe we would require refactoring them to a constants.js kind of file, similar to what we did with task manager.