Data Persistence following Subject Table Interactions

[garrettmflynn]

While using the Subject Table with the generate test datasets, it became somewhat annoying to lose the associated source data + metadata results (forever...) when changing the subject name.

To address this, this PR improves the persistence of data when you update the subject table:

1. Renaming a single subject will result in a persistent link with existing data
2. Creating a new row and swapping subject_id values and maintaining the same session_id will result in data persistence on the same subject_id
   • Without the same session_id, the data will persist on the new subject_id

I'm open to suggestions regarding further rules, changes to these, and any bugs you notice!

[CodyCBakerPhD]

If I change the subject ID of a later row to one of a row above, then delete the row above, I get this (the invalidation is 'subject id already exists')

[garrettmflynn]

Good catch. Thanks!

I've made it so that the table revalidates when any subject_id is resolved from an error state.

[CodyCBakerPhD]

@garrettmflynn Conflict now