I've restored the descriptions for languages and language families from June 6th. Any language or family that did not have a blank description was ignored (ids 153006, 153008, and 156146.) I apologise if any changes were made in the past week that were lost.

In light of this incident, I'll be working on backup, export, etc. (as mentioned above) intensively in the coming week. I've also set up a development copy of the site so I can mess things up without damaging the real deal.