Add documentation for pager and view messages #393

Job	Run time
Build Nix flake	19m 42s
Build Nix flake	19m 42s
Build Docker image	2h 24m 48s
Build Docker image	2h 24m 48s
Build webR	1h 48m 21s
Build webR	2h 8m 50s
Deploy webR documentation to S3	0s
Deploy webR documentation to S3	8s
Deploy webR to S3	0s
Deploy webR to S3	45s
	9h 27m 4s

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