Record the size of an archived artifact when we archive, or link the artifact.
Merge pull request #80 from bigkevmcd/record-artifact-size

Record the size of an archived artifact when we archive, or link the artifact.
Display archive url based links for artifacts.

This changes the projectbuild detail link to display correct links for the
archive.
Merge pull request #81 from bigkevmcd/implement-archive-baseurl

Display archive url based links for artifacts.