Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  59e302dcc0555e082149a6f334d470d7c6f3d5ba

If nothing to migrate, print a message to inform user.

If there is nothing to migrate, the migration script should tell the user so,
rather than exit quietly. This patch fixes that and replaces an echo statement
with Maintenance::output (which is '--quiet'-aware).

Change-Id: Id89fbba166df626c9c70df5d6272cc38a61e3dbb