Refactoring and Bugfixes (#127)

* Replacing nil + compact! with delete, delete_at and delete_if wherever possible
* Fixed Terrain Tag editor not setting the correct terrain
* Fixed Text Cursor in Animation Editor not going right

Data/Scripts/011_Battle/003_Battle/007_Battle_Action_UseItem.rb

@@ -48,12 +48,7 @@ class PokeBattle_Battle
       end
     else
       items = pbGetOwnerItems(idxBattler)
-      items.each_with_index do |thisItem,i|
-        next if thisItem!=item
-        items[i] = nil
-        break
-      end
-      items.compact!
+      items.delete_at(items.index(item))
     end
   end