Sorting glyph is reversed

[mehrdadn]

Sorry this is minor in the grand scheme of things, but it's been constantly confusing me every time I've been using the UI.

The sorting glyphs seem reversed. An upwards-pointing triangle generally denotes "ascending" by convention, not "highest is at the top" (which is not unreasonable, but is not conventional). I'd issue a pull request but I didn't manage to figure out how to fix it in the few minutes I spent looking at the code.

Thanks :)