two phase mode

[eroux]

This is an ongoing discussion but we should be ready to implement: instead of having in one phase:

1. creating the segments, filling title and author name
2. matching each segment with BDRC works

we will separate these into two different tasks, each with their own state. Here's a proposal:

• instead of having annotator role we should split into annotator / annotator_matching
• instead of having reviewer role we should split into reviewer / reviewer_matching
• instead of having volume state, we should have state / state_matching
• volumes start with status_matching = pending when switching to state = reviewed, state_matching automatically switches to ready
• in the regular annotator mode (state_matching = pending), there's no UI to do BDRC matching. Once the volume is reviewed, the BDRC matching becomes possible (the UI can stay the same)

@tenkus47 tell me if you need any more details, and if you need any change in the opensearch db