CORE-4565: corrected a problem that was causing errors when attempting to download a file
CORE-4565: don't bother with provenance if there's no URL to connect to
Attempting to upgrade to Grunt 0.4.X.
More changes for the grunt/lesscss upgrade.
Fixed more issues related to the port to Grunt 0.4 and the latest Less
CSS.
Added a note about the upgrade to Grunt 0.4.