-App now caches solutions
-Action bar now has refresh button for solutions
-Hides refresh button when refreshing
1.3.1
-參考解答現在會被快取
-新增參考解答更新按鈕
-更新時隱藏更新按鈕
-修正通知內容顯示錯誤的問題
-(^.＜)