Add formatter and implement delete method
add delete ui
Merge pull request #35 from tMizuhara/feat/DeleteDataFromDB

Add formatter and implement delete method
fix
Merge branch 'develop' of github.com:tkutsuwada/AndroidPOS into ui/delete_sales
fix
add delte db
add failed message
fix delete method
update sales activity
refactor
Merge pull request #36 from KohichiNishide/ui/delete_sales

Ui/delete sales
fix landscape
refactor
Merge pull request #37 from KohichiNishide/ui/delete_sales

fix landscape