[#709] Add internal choices selectielijstklasse #1992

Job	Run time
Run the Django test suite	2m 11s
Build and check documentation	1m 12s
Build frontend	1m 5s
Build docker image (dev, -dev, dev) / Build image	1m 57s
Build docker image (production, docker) / Build image	1m 59s
End-to-end tests, chromium	6m 11s
Run storybook tests	2m 54s
End-to-end tests, firefox	8m 17s
End-to-end tests, webkit	6m 45s
Push Docker image	0s
	32m 31s

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