New entry/edit can be stopped without being asked to save

[tobiasisenberg]

When a new entry is entered or an existing one edited, it is possible to tap the top-left arrow which brings me back to the overview of existing entries, but without being asked to save. This means that all data/changes are lost if this top-left arrow is tapped without having saved first. It would be better if a safety question would pop up, asking to save or to cancel the new/edited entry.