[Add User] Invalid Error Message for Blank Password

The error message for the empty password is invalid.

Steps to Reproduce:
1. Clone the latest git repository(openmrs 1.11.x)
2. Go to Administrative page.
3. Click on Manage User -> Add User -> Create a new person Click on "Next".
Link: http://localhost:8080/openmrs/admin/users/user.form
4. Then enter a valid data in the field Given and the select the Gender and then click on the "Save User".
Then there will be invalid error message "Please choose a stronger password" (See Attached Snapshot)

Expected:
The error message should be like "Password Cannot be Empty"