Limit work in progress labels to 80 characters when the width of the console is not known (e.g. when running under Mintty or from the tooling API), to make wrapping less likely. Wrapping of the labels currently doesn't work particularly well on some consoles. Also generate less garbage on each 'update now' console event.
Remove verbose logging of downloads and JAR generation Artifact downloads and Gradle JAR generation were emitting logging headers, flooding the console on builds with cold caches. Headers should only be used by operations that group some other progress, like tasks and project configuration.