Who owes whom?

Expenses can be copied or moved from one expenses sheet to another. It is now possible to print all the expenses of an expenses sheet

Wizard when creating a new expenses sheet to introduce the concept of account book. "Who" section new expenses sheet automatically filled the participants of the last expenses sheet.

Now, even when an expenses sheet is open, it is possible to mark as paid the debts induced by the sheet. The expenses sheet is then automatically closed. When accessing a shared expenses sheet, it is now possible to edit the properties of the sheet: modifying the title, adding participants, closing the expenses sheet, ...