A bug when adding a user mail with an uppercase.

[fghhunter]

Cannot show the user starting with letter "f" email address after add a user with first email address uppercase letter "F".

Add the email again, pops duplicate entry info.

Open the budibase APP, show a json string as below:

[mikesealey]

Hi @fghhunter

If you believe this is a bug, please submit a new issue here: https://github.com/Budibase/budibase/issues/new/choose

Making sure to follow the template, including steps to replicate.

[fghhunter]

thanks