Allow Test Admin to provide contextual information about conflict resolution

[jscholes]

Description

At present, it is only possible for the Test Admin to resolve conflicts on a per-result basis, without providing any test-level documentation or context about decisions that were made during the resolution process.

Impact

1. When decisions are made (e.g. in a CG meeting) that have an impact on conflict resolution for a test, the Test Admin cannot record this context in a way that carries forward to published reports. As such, it is non-obvious (or impossible) for an assistive technology vendor or other interested party to track the reasoning for those decisions.

2. Once the functionality in issue Allow testers to provide an explanation of the undesirable behaviours they experience #425 has been implemented, individual testers will be able to provide an explanation of the undesirable behaviour(s) that they experienced. But the wording of these explanations will undoubtedly differ across results, and it is not a tester's responsibility to investigate the reasoning for an undesirable behaviour, nor to provide a concise description for AT vendors.

   One of the roles fulfilled by the Test Admin, with CG and other input, is to write that description instead. But such content cannot currently be recorded within the app.

Suggested Solution

Provide a new text input, scoped to the entire result set for a single test. The Test Admin will use this field to provide any pertinent facts that may assist an interested party in understanding decisions that were taken.

CC @richnoah, @s3ththompson and @mcking65