Steps to regenerate:
- Open URL https://demo-trunk.ofbiz.apache.org
2. Click on the "Register" button for creating a new customer
3. Enter all the mandatory details for the registring a new customer
4. Enter the user name with a dot (.), for example: "demo.user"
5. Click on the "Save" button
Actual: Error message "Username can only have letters, digits and the _- characters" is displaying on the screen.
*Expected: *Dot (.) should be also allowed in validation rules when we enter user name manually with a dot (.)