e53acd1086008205b21cc8fd9d7e5e9ef079bedc

Re-implemented the old download links. To avoid adding bogus links on empty files, PatchSetSelectBox2 needs to know the meta info for the diff. Don't add the download link if meta == null. Change-Id: Ied3e0287a17144ab2d6d50289625495568cb53a6
Description
RETIRED, Gerrit as used by OpenStack