Make redirect when saving theme settings go back to the same theme settings page

[TSP]

This drives me nuts. 

When I've edited the theme settings and save them, I'm redirected back to the themes overview. In most cases this is the point where I wish to then view how it looks on the front end and then continue tinkering with the theme settings in the same exact theme. 

So in 9/10 cases it's far more useful to be redirected to the same tab I was in when I edited theme settings. I don't wish to then suddenly go and edit another theme...