Minor twekas to logging code and log messages.
Refactor to remove redundant variables.
Less code, more happiness.
Reverse callback to standard (err, res) signature.
crawl result: handle case of all failures.

Error file was only being read if success file existed. This might not be the case if all urls failed.
Errors should bubble up the callback chain.
Handle errors in analysis results.

This change ensures that data from all urls that had at least one successful analysis result (i.e. from one analyzer) will get processed.
Update users of pagedata structure.
Additional tweaks to pageData structure.

Fixes metrics that reads from har files,
Fix WPT repeatView data.
Remove block that will never be executed.
Render both download and analysis errors.