frontend: fix: make out transformer more side-effect free
frontend: stronger types for post transformer in Adhocracy.Obviel module
Merge branch 'master' into feature-#47

Conflicts:
	src/adhocracy/adhocracy/frontend/static/js/Adhocracy/Frames/ProposalWorkbench.ts
	src/adhocracy/adhocracy/frontend/static/js/Adhocracy/Obviel.ts