New keyboard shortcuts

Hi!

I'd like to see keyboard shortcuts for adjusting the sorting of files, both local and remote. (Now you can only do it by clicking on column labels.)

I suggest the following shortcut keys (inspired from the file manager Total Commander):

CTRL-F3 Sort by filename
CTRL-F4 Sort by extension *
CTRL-F5 Sort by date
CTRL-F6 Sort by size

(* Is sorting by extension possible? Can the extension be given a column of its own?)

What do you guys think?

lf