Issue #2918149 by harpreet16, tim.plunkett, raman.b, anil.gangwal, dalin, grndlvl, nikunjkotecha, kalyansamanta, paulocs, ranjith_kumar_k_u, froboy: "This block is broken or missing..." should only be shown to users that have access to do something about it

Issue #2855636 by idebr, Pavan B S, chiranjeeb2410, nikunjkotecha, NikitaJain, hugovk, krknth, xjm: Regression: incorrect human-readable name for content type

Issue #1808478 by Mile23, prhavile, naveenvalecha, llbbl, hctom, nikunjkotecha, Lars Toomre, deepakaryan1988, mrjmd, jgeryk, mlevasseur: Add missing type hinting to Comment module docblocks