Adding outlets and actions could be smoother

[gcasa]

IMO, when you add a new outlet or action, the dummy name of the new item should be automatically selected for editing so that you can just type the name you want in.

I know it's a fairly minor irritation, but at present you click the button to add an outlet, then you have to find the new outlet with the mouse and double-click it to start typing in the name, and I find that a bit fiddly/clunky. Much nicer to click the button then just start typing.

https://savannah.gnu.org/bugs/?25284