Resolve "Ensure there are no spaces in usernames"
What does this MR do?
Adds a check that the username supplied when creating/editing staff uses only valid characters.
Screenshots
Does this MR meet the acceptance criteria?
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I have added tests to validate the new functionality. -
I have updated the documentation accordingly. -
I have added translations for all new client-side text. Closes #223 (closed)
Edited by Kevin Chong