Only save the auto-generated paint timelines if timeline capture was enabled for the test
Switched the bulktest sample to use curl with persistent connections
Fixed some css properties that were generating console log warnings
Disabled the default of capturing timelines
Tweaked the dev tools processing to extract the console log messages while processing for progress so we don't have to double-process the timelines.
Merge branch 'master' of github.com:WPO-Foundation/webpagetest