CTA combat impulses now 40% less likely and full gender equality support added

- Reduced base on_combat_pulse weight for CTA XP advancement in a possible knee-jerk reaction to some more playtesting in which I found it too quick to advance under certain, easily-achievable circumstances.

- Ladies, whenever you can command armies, you can now select Combat Trait Advancement ambitions.  Likewise, female player characters that cannot command armies may no longer select the ambitions (previously only the AI was barred).