Implement exporting sales data
Merge pull request #31 from tMizuhara/feat/CSVExport

Implement exporting sales data
fix one day sales
fix one day sales
Merge pull request #32 from tkutsuwada/fix/OneDaySales

fix one day sales
Merge branch 'develop' of github.com:tkutsuwada/AndroidPOS into feat/delete_on_record
adjust layout