Fix username case

What does this MR do and why?

This lowers all user input for user creation usernames. This is important because when we take username input from the login screen we lower it so logins are no longer case sensitive. This is breaking if a user is able to create a username with a capital. Then they cannot login.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• Have you checked this doesn't interfere/conflict/duplicate someone elses work?
• Have you fully tested your changes?
• Have you resolved any lint issues?
• Have you assigned a reviewer?
• Have you applied correct labels?

added Bug ~22961862 labels

requested review from @Zedifus

assigned to @amcmanu3

changed target branch from master to dev

marked the checklist item Have you checked this doesn't interfere/conflict/duplicate someone elses work? as completed

marked the checklist item Have you fully tested your changes? as completed

marked the checklist item Have you resolved any lint issues? as completed

marked the checklist item Have you applied correct labels? as completed

marked the checklist item Have you assigned a reviewer? as completed

changed title from Fix Ace editor saving keybinds and ex-commands to Fix username case

approved this merge request

mentioned in commit 93e8d8a5

merged

mentioned in merge request !357 (merged)

Great catch!