Message tags in test reports

[mattias-p]

Today the result page shows all the messages in a test report. For each message the presentation includes the test case where it originated and a localized description with interpolated values. While the English descriptions are fairly consistent across Engine versions, correlating a message description in a result page with a message in a test case specification could be made easier. To this end the result page should be updated to include the message tag of each message. Message tags are more stable than the descriptions and they're not affected by localization.

[matsduf]

This requires that the API with the test result is updated to include the tag, doesn't it?