Improve messaging if password not allowed due to re-use of another field

**Is your feature request related to a problem? Please describe.**
The password cannot contain the value of any of the registration fields, such as the First Name, Last Name, address etc. This is checked when the form is submitted and switches the password to "very weak" which is confusing.

**Describe the solution you'd like**
Improve the messaging as to why the password is not allowed and how to fix.