Hedge Fence Gate and Wrought Iron Fence Gate too strong

[jamespapp]

v0.9.0a
Relative to the Hedge Fence and Wrought Iron Fence, respectively, both the armor and health points for these two (gate) buildings seem WAY too high. In the Palisade & Fortified classes, the fence gates are weaker than the fences (both with respect to armor and health, about 80% as strong). Following this model, the HFG should have armor 0 and health 80, and the WIFG should have armor 2 and health 160.