Cross-cell newcomer reviews
Changes to apply the cross-cell newcomer reviews, if the current tests prove conclusive.
Other related changes included:
- Reworked the description of the cell recruitment manager role, to make it more descriptive, and include the current set of responsibilities.
- Added checking for upcoming developer reviews to the pre-vacation checklist, to make sure everyone in a cell actually reviews each newcomer - we need full unanimity.
@symbolist @pauloviadanna Could you check if this looks right?