When running the evolver, we've historically shown the message "The

database upgrade was successful!" This made sense back before the entire

database setup and upgrade process was controlled by Django Evolution.

Now, since it handles population of the initial database, this message

isn't enough.
We now track whether this appears to be a brand-new install vs. an

upgrade (based on the presence of the Version and Evolution models

in the database), and use that to determine which message to display.

Tested installing a new database and upgrading an old one. Saw the

correct message in both circumstances.