Bulk curation

[Richard Eckart de Castilho]

Is your feature request related to a problem? Please describe.
When a document is ready for curation, an initial merge of the already annotated documents is not performed until the curator opens the document for curation. At this point, an initial merge is performed. In some cases, the curator just wants to do e.g. majority vote and not curate anything manually. However, currently, the curator would still need to open every document in turn in order to trigger the merge and then and mark it as curation finished.

Describe the solution you'd like
A bulk action that goes over all document and performs the merge would be useful. Depending on whether the auto-merge already resolves all curatable positions, the document should then be set either to curation finished or to curation in progress.

Describe alternatives you've considered
Trigger the auto-merge as part of the state change from annotation-in-progress to annotation-finished.