adding line breaks in between input fields

Fix rendering a chart with a single bar

Fix branch names containing slashes

Fix `asMinutes` label

Allow specifying the number of API requests.

Append branch name to URL hash.

bust cache

Allow specifying the branch to scan builds for.

Scale build times to seconds, minutes or hours.

avoid redundant bar value labels

fix formatting

Display vertical lines only if there is more than one build per day.

do not refresh if there are no valid builds

separate iteration from filtering

move getClockTime and getDuration utilities out of updateChart