Fix Roman centurio regressions (probability for an excursion was too high and an attack error followed, as well as a twice defined target var resulting in the centurio attacking a palisade).
Prevent the Roman centurio dying too quick. He should be hard to capture.
Better trader, druid, centurio communcation. Centurio returns to a random point if no target found. Defend druid spot better. Fix reinforcements. Balance.