Issue summary:

When creating a new manual user account, the account creation page can be saved even though custom user profile fields marked 'Required' have not been entered. This only applies when the account is created manually e.g. by a Site Administrator. It behaves correctly when a user creates their own account via self-registration.

Steps to replicate:

1. Navigate to Site Administration>Users>User profile fields
2. Click 'Create a new profile field'>Drop down menu (any type should work)
3. Fill out name, shortname, menu options
4. Set 'Is this field required?'>Yes
5. Save changes
6. Go to Site administration>Users>Accounts>Add a new user
7. Fill in all the necessary fields except the custom profile field you created
8. Save changes

Observed:

The user account is created successfully

Expected:

The user creating the account (e.g. admin) is redirected to the same page with a message 'Please fill in required fields' and the profile field flagged with an alert icon. Account cannot be created until required field is filled in.