In previous alphas, the Civilization Overview pages (i.e. {civ}.json files) were filled with false information. A lot of the mentioned features aren't part of the game and some mentioned bonuses are plain wrong. Moreover, information on many things that are specific to civilizations in 0 A.D. is absent.
D759/rP24492+rP24493+rP24494 greatly simplified things by loading information on team bonuses, civ bonuses, and specific structures directly from the relevant files, and purged the bulk of outdated or blatantly wrong information.
However, there are still some incorrect entries, and some civ bonuses are hidden in simulation templates and need to be inserted for completeness, which is what this differential does.
Initial patch by @ValihrAnt, rebased, updated, expanded, and redone by @Nescio, greatly reduced in size by @s0600204, updated again by @Nescio.