The campaigns extension of the upload wizard offers you the option to skip all sorts of steps in the UploadWizard. Often we skip the intro and we just offer one license + own work. This is done to make uploading very efficient and easy (not too many options).
UploadWizard was extended to support structured data on Commons, but the campaigns extension hasn't been updated yet to be able to disable parts if these are redundant. Options to add:
* Ability to disable captions
* Ability to disable statements addition
* Ability to complete skip the structured data step
Acceptance criteria:
`enabled` settings in the campaign config
[] `wikibase.enabled == false`: captions input absent, metadata step absent
[] `wikibase.enabled == true`, `wikibase.captions.enabled == true`, `wikibase.statements.enabled == false`: captions input boxes present, metadata step absent
[] `wikibase.enabled == true`, `wikibase.captions.enabled == false`, `wikibase.statements.enabled == true`: captions input boxes absent, metadata step present
[] `wikibase.enabled == true`, `wikibase.captions.enabled == true`, `wikibase.statements.enabled == true`: captions input boxes present, metadata step present