Minor script editor nuisance + alternative editors question

Is there a setting I can change in order to have the “Include files” section of the Script editor unfolded by default? (It’s one of those little nuisances that can work on one’s nerves when you’re doing small adaptations on your own scripts on a regular basis).

And while I’m on it - the Script Editor thing: Anyone here who want to reveal which alternative editor(s) they are using - and I mean for Javascript coding. I would likely switch if there’s a good one that has autocomplete functionality for EcmaScript 5.