On the user profile form, Roles with a dot in the name do not remember their input on validation failure #1325

Hi

I got hit by a small bug but an unpleased one, as it takes me long time to figure it out.

Describe the bug
I made a new user : I checked one role for this user and I mistyped the password and the password-confirm didn't match. When I save my user, page is refreshed, error message is displayed but the role is unchecked. I did several tests and I can reproduce it : it seems that this bug occurred because :

• I checked the last role of the list
• OR because my role contains a dot "Client.NAME"

Steps To Reproduce
Steps to reproduce the behavior:

1. Go to '/settings/users/create'
2. Fill name and email
3. Check the last role, which contains a dot in his name
4. Mistype password and password-confirm so they don't match
5. Save user

Your Configuration (please complete the following information):

• Exact BookStack Version (Found in settings): BookStack v0.25.1

Thanks !