Plumb so items without count in Trade could be visually different

Signed-off-by: James Ketrenos <james_eikona@ketrenos.com>

client/src/Resource.js

@@ -11,7 +11,7 @@ const Resource = ({ type, select, disabled, available, count, label, onClick })
   };
   
   if (label) {
-    return <div className="Resource"
+    return <div className={`Resource ${count === 0 ? 'None' : ''}`}
         disabled={disabled}
         data-type={type}
         onClick={onClick ? onClick : click}

client/src/Trade.css

@@ -102,6 +102,10 @@
   line-height: 1.5rem;
 }
 
+.Trade .Resource.None {
+  /* filter: brightness(70%); */
+}
+
 .Trade .PlayerColor {
   align-self: flex-start;
   width: 0.75em;