Wikimedia Bugzilla is closed!

When inputting database information such as the database name, the mwdumper GUI
displays a little status thingy saying if it's ready or if there's a problem,
such as a missing database or inability to find tables.

This updates when you change the fields, but not when you, say, switch over to a
terminal and fix the database.

Rechecking the database readiness state when the app regains focus would be a
little convenience here. Alternatively, a 'retry' button might not be too awful.