#1 OPEN - task 1: 共通機能切り出し 
https://github.com/koyakgit/AndroidLibrary/issues/issue/1
#30 OPEN - task 30: 再構成 
https://github.com/koyakgit/MoneyMemo/issues/issue/30
不要クラスの削除
#30 OPEN - task 30: 再構成 
https://github.com/koyakgit/MoneyMemo/issues/issue/30
基本的なDBアクセス処理を実装
#30 OPEN - task 30: 再構成 
https://github.com/koyakgit/MoneyMemo/issues/issue/30
DBアクセス処理更新