Broken signup password validation

[PauloASilva]

According to the error message, password should meet the following requirements: "Password should contain at least one digit, one small letter and one capital letter and should at least contain 8 characters."

Password is validated using the following regular expression: /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,16}$/.

Although used regular expression matches A123456c as a valid password, it fails for A123456ç.

We can either change password requirements/error message or fix validation.
OWASP Password Strength Test is something we can used to address the later.

[progshubham01]

I will be taking this up @progshubham01

[nikhil-rajesh]

Fixed password validation message in #165