Added shields to Celt cav skirmisher Advanced and Elite to differentiate from the Basic.

Finalized Acropolis II. Please playtest. It's a 1v1 acropolis-style map
with the Mediterranean assets.

This was SVN commit r9479.

binaries/data/mods/public/art/actors/units/celts/cavalry_javelinist_a_r.xml

@@ -13,6 +13,7 @@
       <mesh>skeletal/m_pants.dae</mesh>
       <props>
         <prop actor="props/units/heads/head_lime.xml" attachpoint="head"/>
+        <prop actor="props/units/shields/celt_round_a.xml" attachpoint="shield"/>
         <prop actor="props/units/weapons/jav.xml" attachpoint="loaded-r_hand"/>
         <prop actor="props/units/weapons/jav.xml" attachpoint="l_hand"/>
         <prop actor="props/units/weapons/jav_projectile.xml" attachpoint="projectile"/>

binaries/data/mods/public/art/actors/units/celts/cavalry_javelinist_e_r.xml

@@ -14,6 +14,7 @@
       <props>
         <prop actor="props/units/heads/celt_helmet_b.xml" attachpoint="helmet"/>
         <prop actor="props/units/heads/head_celt.xml" attachpoint="head"/>
+        <prop actor="props/units/shields/celt_round_e.xml" attachpoint="shield"/>
         <prop actor="props/units/weapons/jav.xml" attachpoint="l_hand"/>
         <prop actor="props/units/weapons/jav.xml" attachpoint="loaded-r_hand"/>
         <prop actor="props/units/weapons/jav_projectile.xml" attachpoint="projectile"/>