move portal entity array decoding into one place, and share the code for the common array elements

TODO: move link and field entities into here too

code/map_data_render.js

@@ -295,20 +295,7 @@ window.Render.prototype.createPortalEntity = function(ent) {
 
   var latlng = L.latLng(ent[2][2]/1E6, ent[2][3]/1E6);
 
-  var data = {
-   // ent[2][0] is type - not needed as we know we're a portal
-    team:      ent[2][1],
-    latE6:     ent[2][2],
-    lngE6:     ent[2][3],
-    level:     ent[2][4],
-    health:    ent[2][5],
-    resCount:  ent[2][6],
-    image:     ent[2][7],
-    title:     ent[2][8],
-    ornaments: ent[2][9],
-    mission:   ent[2][10],
-    mission50plus: ent[2][11],
-  };
+  var data = decodeArray.portalSummary(ent[2]);
 
   var dataOptions = {
     level: portalLevel,