Do not save note if the back button is tapped

Fix committed into lp:reminders-app at revision 36, scheduled for release in reminders-app, milestone Unknown

Putting this back to incomplete as we had to revert the fix.

Also, I'd like to align this with how Evernote works, which is, to automatically save notes. That would get rid of the distinction between "back" and "save" and implicitly solve this bug.

Opinions?

I still think the save button is necessary for the user to validate what they've just entered.
The android evernote client uses it. So there's just one control on the header which is save, and if users want to exit without saving they just have to press the hard back button.
Since we don't have hard back button, I'd say we need to place both save and back on the header.

However I agree that the first time you create a note and hit back, you should have a "draft" note created, so I think the untitled note makes sense.

Wouldn't it be simpler to just change the 'back' button to a 'cancel' button. Then there is no chance of confusion as to what the user was intending to do.

You could even go so far as to have the 'back' button change to a 'cancel' button only when there are unsaved changes.

closing this as invalid according to Dani's comment. What happens now is this:

* Pressing the "New note" button creates a new Untitled note
* When the note is created, it automatically opens the editor to edit this note
* If the user then cancels (presses the back button) he'll be left with the untitled note since he didn't edit it.

This is also how the evernote website works