Thoughts about result diffs

[zloster]

I saw this commit: a673348

• Maybe with several test environments it will be beneficial to split the home page test runs table per environment. Than it will be easier to "determine" which is the previous result.
• For finer control of the difference calculation maybe adding one metadata field in the results.json: compatibleCommits: [commitId1, commitId2]. Or just a separate file to be uploaded that provides this sort of mappings - allow diffs of benchmark results between these and these commits. The git commit information was added today: af85e6d