Update 8.0.0.sqlite

[distributist]

Fixing errors in update script. These errors cause the Debian repository update to fail. I was sure I fixed this the other day and submitted a pull request, but can find neither my changes nor the request.

The change I am most unsure of is line 13, where I have added the necessary additional reference to ajxp_user_prefs. However, as I am not sure exactly what this query is doing, I am not sure if my change is correct or not.