The webform workflow module adds the ability to add states to webform submissions. Investigate how to integrate this functionality with islandora webform. Some ideas:
Add filter option to submissions form to only show submissions matching a workflow state.
Add a configuration on the islandora settings page for the webform to set an "ingestable" workflow state, which would set the default filter for the submissions table.
Let ingestion automatically change the workflow state (e.g. to "Ingested").
The webform workflow module adds the ability to add states to webform submissions. Investigate how to integrate this functionality with islandora webform. Some ideas: