[Feature Request] Add icons to column headers to indicate sort direction

[NormPlum]

Summary:

You can click on a column header to sort by it, and to change the sort direction. However there's currently no indication as to which column a table is currently sorted by, or in what direction.

I suggest adding an icon (like an up or down arrow/caret) to the currently-sorted column header in the direction that it's sorted.

For example, here's what it looks like now when sorted by Name (asc):

And here's what I'm suggesting it could look like instead:

[gustavo-iniguez-goya]

The problem I think is the custom views we're using. The same problem occurs when reordering the columns, there's no visual indicator that you're dragging something.

I'll investigate it a bit more.

[tredondo]

Great idea @NormPlum !