[GNC] Auto commit with auto save?

[David G. Pickett]

"Don't do that!" does not prevent data loss from human error, which for this app behavior is too easy to create and not realize.

If the commit was automatic every time you modified a transaction when the new state was valid, then I would not leave the tab in an uncommitted state, but that is not how it was devised.  I leave because it looks fine.  There is no indication of an uncommitted transaction I can see.  In terms of human factors, one might go to another tab for information to complete a transaction, so we do not want to prevent the user leaving a tab with an uncommitted, possibly invalid transaction.  Maybe we should color the tab red while in this state?  Or pop up a dialog if it persists a bit too long, or if auto save fires on its timer?  But the user may have left, trusting in auto save, so I suggest an auto commit if valid on auto save.