Bug with emails that have "." in them breaks username requirements #350
Description
Many email providers ignore "." in the email so you can login to Google provider with email such as "John.Frank.Doe@gmail.com" and username will be created as John.Frank.Doe, this breaks the "business rules" setup where username should only have one "." which is normally validated on the UI when changing username. If you create a user with periods in their username, it breaks the profile page for such users.