Finally fixed all the localization

src/main/java/forestry/arboriculture/items/ItemStairs.java

@@ -64,7 +64,7 @@ public class ItemStairs extends ItemForestryBlock {
 	@Override
 	public String getUnlocalizedName(ItemStack stack) {
 		WoodType type = WoodType.getFromCompound(stack.getTagCompound());
-		return super.getUnlocalizedName(stack) + "." + type.ordinal(); //To change body of generated methods, choose Tools | Templates.
+		return getBlock().getUnlocalizedName() + "." + type.ordinal(); //To change body of generated methods, choose Tools | Templates.
 	}
 
 }

src/main/java/forestry/core/circuits/ItemCircuitBoard.java

@@ -62,7 +62,7 @@ public class ItemCircuitBoard extends ItemForestryMultiPass {
 	@Override
 	public String getUnlocalizedName(ItemStack stack) {
 		EnumCircuitBoardType type = EnumCircuitBoardType.values()[stack.getItemDamage()];
-		return "item.circuitboard." + type.toString().toLowerCase(Locale.ENGLISH);
+		return "item.for.circuitboard." + type.toString().toLowerCase(Locale.ENGLISH);
 	}
 
 	@SuppressWarnings({"unchecked", "rawtypes"})

src/main/java/forestry/core/utils/StringUtil.java

@@ -19,7 +19,7 @@ import net.minecraft.util.StatCollector;
 public class StringUtil {
 
 	public static String localize(String key) {
-		return StatCollector.translateToLocal(key).replace("\\n", "\n").replace("@", "%").replace("\\%", "@");
+		return StatCollector.translateToLocal("for." + key).replace("\\n", "\n").replace("@", "%").replace("\\%", "@");
 	}
 
 	public static String localizeAndFormat(String key, Object... args) {

src/main/java/forestry/mail/items/ItemStamps.java

@@ -64,7 +64,7 @@ public class ItemStamps extends ItemOverlay implements IStamps {
 		if (itemstack.getItemDamage() < 0 || itemstack.getItemDamage() >= stampInfo.length)
 			return null;
 
-		return super.getUnlocalizedName(itemstack) + "." + stampInfo[itemstack.getItemDamage()].name;
+		return super.getUnlocalizedName(itemstack);
 	}