Download of raw data behind test report

[mthuurne]

We create HTML reports for known report formats such as JUnit XML or log files. However, it is possible the user will want to process those files with external tooling, for which access to the underlying data is required. So we should provide a way to download the raw data that is behind a report.

I'm not sure where would be the best place to put it:

• a second icon could be added in the report header (next to "open in new tab"), but that would make the UI a bit crowded
• a table in the Overview tab
• as a link at the top or bottom of the report, but that wouldn't work for reports that we embed in iframes rather than post-process, such as long log files or docs that are already in HTML
• in some kind of storage/artifact management UI, but that would still have to be linked from the report pages

For the download itself, it would be useful to put the job ID and task name in the file name in addition to the report name.

[mthuurne]

Note that adding .gz to the URL of a single file report will in fact serve the (compressed) raw file, but that is not very convenient and certainly not easy to discover.