Keep options (collapse all, settings) frozen while scrolling

[theslyprofessor]

I'd like the options to be frozen while scrolling. Per my previous bug report, saving uncollapses all panes. If you have scrolled down to a later structure in structure-view, this presents a major workflow inconvenience. You have to scroll all the way up to the top structures just to collapse the panes again. Keeping the options frozen at the top will keep it so that you don't have to scroll to access these settings.