Add an option for "normalised" soldiers, where new recruits get a randomly distributed points quota.

If this option is enabled, new recruits roll bravery between their min and max, set their stats to the minimum, then a quota is set to half the difference between the max and current stats, and a random stat other than bravery is chosen to be incremented until the quota is met. (respects maximum stat values from the ruleset during this allocation)