refs #98
play-plugins-mailer読込設定追加
設定値はシステムプロパティから読み込む
mongodbの設定をシステムプロパティから読み込めなかったため一旦ベタ書き
send mail
Merge branch 'master' into feature/send_mail
Merge branch 'feature/send_mail' into feature/send_mail_for_target
send mail to adding target
repair application.conf
Merge pull request #5 from ta1kt0me/feature/send_mail_for_target

we can sending html mail