Remove currency from cell

- Remove currency from cell
- Added currency to column name
Remove needless code

- Remove needless code
Remove PLN from cell and add it to column name

- Remove PLN from cell
- Added PLN to column name
Fix tests

- Fix tests
Merge branch 'develop' into feature/remove-pln-from-column
Merge pull request #152 from kula1922/feature/remove-pln-from-column

Feature/remove pln from column