v2.2 - Centrality PoCs

Added

• ID-Card (#13, #14, #15, #16, #19)
• Revocation test (#17)

Change

• Expiration and keys for existing credentials (#18)

v2.0 - Added ageLimits and birthdate attributes. - Use irma-demo scheme

Update the demo scheme to be more generic (#12)

* Update pbdf demo-scheme

* Change internal affairs to PBDF

* Remove PBDF folder

* Improve Over18 credential

* Improve Over18 credential

* Sign

* Sign

* Add over65 optional

* Set over65 to optional

* Sign using production server