Remove save button and save todo automatically

[Mrnofish]

When creating a new item, the Save button is hidden as long as the keyboard is open. Hiding the keyboard is necessary for the button to become visible again.

This also happens when a selection pane is open (e.g. priority).

It can lead to confusion, especially as the norm for so many apps these days is to save automatically and not require manual intervention.

Indeed, I would suggest saving automatically (especially new items, if not changed ones) and presenting a discard changes yes/no prompt if the user uses the back button or gesture.