This reverts PR #211.
I disagree with this change, I use the functionality a lot, it was the primary way I used to organize and edit transactions labels and am sad to see this go.
you can edit a sending address in the send tab Address Book
Using the address book should not be encouraged at all! A while ago it was even proposed to remove it. There’s rarely need to scroll through all historical addresses used and unused. The transaction list does just fine for this.
While all other actions apply directly to the selected transaction, the Edit Label action applies to the selected transaction’s address.
In practice when bitcoin is used in the commonly advised way, generate a new address for each transaction, those are equivalent though.
I doubt I (and luke-jr) will be the only users that will stumblle on this. Further discussion here: #211 (comment)