D1761/rP22984 enabled workshops for all civilizations and removed siege engines and technologies from the fortresses, D2532/rP23746 made champion cavalry trainable at the stable, D2533/rP23781 made war dogs trainable at the barracks. This patch:
* enables the stable for all civilizations:
* removes cavalry from all barracks;
* removes champion cavalry from all fortresses;
* deletes the now obsolete `{civ}_champion_cavalry_barracks.xml` templates;
* removes cavalry technologies from corral and fortress;
* makes champion chariots trainable at the stable (they are just champion cavalry);
* removes champion chariots from all fortresses;
* deletes the now obsolete `{civ}_champion_chariot_barracks.xml` templates;
* moves war dogs from barracks to stable;
* moves archery traditition to civic centre, since it affects all archers, not just infantry;
* makes the unlock champions technology 30% cheaper;
* removes the increased cost of `cart_temple.xml`, `kush_temple.xml` doesn't have this either.