Sybren A. Stüvel b34fee514a OAPI: include worker's "last seen" timestamp
Include the worker's "last seen" timestamp in the worker summary, details,
and SocketIO updates.

This is different from the "updated" timestamp, which indicates the last
time the worker entry in the database was updated (which could also be
in response to a status change request from the web interface).
2022-07-04 12:47:25 +02:00
..