A little Mantis plugin, which forces users to use a strong password at client side

What does strong password mean? hereafter, the following rules :

• Must contain at least 8 characters
• Must contain at least one uppercase letter
• Must contain at least one lowercase letter
• Must contain at least one number
• Must contain at least one special character

1. Copy PasswordStrength folder into plugins folder.
2. Open Mantis with browser.
3. Log in as administrator.
4. Go to Manage -> Manage Plugins.
5. Find PasswordStrength in the list.
6. Click Install.