ADI export script (bug 1014752)

Fixes [bug 1014752](https://bugzilla.mozilla.org/show_bug.cgi?id=1014752)
thanks for the tip, we're going to change that to yesterday's date because it seems the hive data are only updated for the previous day. That would then be (please correct me):
```YESTERDAY=$(date --date="yesterday" +"%Y-%m-%d")```