[openstreetmap-website] Removing 'active' column breaks osmosis (#40)

[denispeplin]

```
osmosis --read-xml-0.6 file="RU-VGG.osm.bz2" --write-apidb-0.6 populateCurrentTables=yes host="localhost" database="openstreetmap" user="openstreetmap" password="openstreetmap" validateSchemaVersion=no
```

outputs error:

```
...
SEVERE: Thread for task 1-read-xml-0.6 failed
...
Caused by: org.postgresql.util.PSQLException: ERROR: column "active" of relation "users" does not exist
...
```

The reason is migration from 051_add_status_to_user.rb

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https://github.com/openstreetmap/openstreetmap-website/issues/40