Fix required fields check on Bulk registration CSV upload #29
Description
The problem is originally mentioned in the Awesome-Technologies/synapse-admin#552, but the actual reason is a bit different.
Attached file "example-bad.csv" contains a supposedly good file for import that fails either with "required field displayname is missing" or with "required field id is missing"
Attached file "example-good.csv"
contains an unexpectedly good file for import that passes the required fields check (note that in this file id is renamed as i_d and displayname is renamed as display_name).
Nevertheless, even after that synapse-admin does not see IDs