New Battalion Standards (meshes, textures, and actors) for all in-game civs.
Adjust formation template VisualActor to point to this new standard.
refs: r26326
Differential: https://code.wildfiregames.com/D4467
Forum discussion: https://wildfiregames.com/forum/topic/68008-formation-standards-total-war-style-flags-over-battalions/