Introducing checkNewPasswordStrength static method
Use the new checkNewPasswordStrength() method
Make checkNewPasswordStrength pluggable, refs #435
Closes #435: 5 char minimum length is really really short, so lets bump that up to current minimums
Slight tweak in settings save logic; Weak password error
Accurate error message
Accurate error message
Merge branch 'master' into password-validation-1

Conflicts:
	Idno/Pages/Account/Register.php
	Idno/Pages/Account/Settings.php
Merge pull request #437 from mapkyca/password-validation-1

Pluggable password validation
Tweaks to password strength checker