Make this error better / easier to understand

[gdestuynder]

This is the message that appears when you login to an RP that requires AAL=MEDIUM for example (ie needs 2FA) but do not have 2FA setup. Note that this is not necessarily just because youre missing 2FA, it could be other security attributes.

sso-dashboard/dashboard/auth.py

Lines 164 to 168 in 20130ab

	elif error_code == 'aai_failed':
	error_text = "{client} requires you to setup additional security measures for your account, \
	such as enabling multi-factor authentication (MFA) or using a safer authentication method (such as a \
	Firefox Account login). You will not be able to login until this is \
	done.".format(client=self.data.get('client'))

Note: this is also missing the fact that in the FxA example it should say "Firefox Accounts with MFA" not just FxA (if we keep this message)