Users:
- Prepare data protocol was removed, and now it's a step of the training protocol.
- Hotfix: predict protocol was not setting the tilt series id to the generated tomograms.
Developers:
- Even/Odd present in metadata or not logic was inverted along the training and predict protocols.
- Add a base protocol to manage these two entryways to the training and predict protocols.
- Tests refactored using the Test Centralization Layer from scipion-em-tomo.