Fixed issue where popover wasn't appearing when first pokemon didn't have a mega stone

client/app/js/models/battles/pokemon.coffee

@@ -248,6 +248,7 @@ class @Pokemon extends Backbone.Model
     if @get('species') == "Rayquaza" and "Dragon Ascent" in @get('moves')
       return true
     item = @getItem()
+    return false if typeof item == "undefined"
     return false  if item.type != 'megastone'
     [ species, forme ] = item.mega
     return false  if @get('species') != species || @get('forme') != 'default'