Document or fix the "tags" value in the output of the database rebuilding API endpoint

[tanius]

Currently, at the end of the execution of http://localhost:5000/hardUpdateFromEdgeRydersDiscourse, something like this may appear (here for the case of the ethno-ngi-forward corpus):

{"tags": ["3787", "3789", "3790", "3788", "3793", "3794", "3796", "3791", "3795", "3792"], "users": [], "posts": [], "comments": []}

None of this makes sense to me. "Tags" usually refers to "codes" in Open Ethnographer, but here that does not seem to fit because (1) there are too few, (2) their count does not match with what http://localhost:5000/status says, (3) what are these numbers.

Also, it does not make sense that "users", "posts" and "comments" would all be empty at this stage.