[Openid-specs-mobile-profile] Issue #40: LOA4 authentication (openid/mobile)

[Torsten Lodderstedt]

New issue 40: LOA4 authentication
https://bitbucket.org/openid/mobile/issues/40/loa4-authentication

Torsten Lodderstedt:

add authentication supporting none-repudiation (identity proved subject, transaction needs to be traceable) 
- in current mobile connect profile, this is supposed to be implemented using a combination of acr value, dtbs & signed data (claim?)