Motivation
Currently, when people move a file to Commons with the FileImporter, a user account on Commons is auto-created for the original uploader of the file in the source wiki. This also triggers a welcoming message for the original uploaders and this is probably confusing since they didn't participate in any activity.
Acceptance criteria
- We don't want to create accounts for people who did not participate in any activity.
- If the user name does not yet exist on Commons, it will not be resolved
Notes
The auto-creation is related to the import for the FileRevisons. There we cannot use prefix links on usernames and our current setting is "create the user and link him if he did not exist before".