Merging agelimits (#2)

* Added support for skipping ageLimits credential

* Make idin credential id configurable for testing

* Added user warning that attributes are going to be issued twice

* Improved text (feedback Bart)

* chore: Specify that the double issuance will end somewhere in 2020, and not necessarily a year after this change.
2 jobs for master in 28 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #93260
build-en

00:00:28

passed #93261
build-nl

00:00:28