"Select with middle mouse button"

[Dreamer]

Middle mouse button works nice already:

- in tab-bar - close tab
- in address bar - edit path

I suggest the option "Select with middle mouse button" because currently there is no way to select the items with a mouse if NC mode is enabled, there is even no menu item, toolbar button... There is an option "Select with right mouse button", but the right button IS needed, middle button has NO action currently (except open the folder in the new tab), so it would be even more useful that the other (existing option) IMO.

It might be also a workaround for option I have requested here:

"Select items with a mouse also in NC-mode"

Of course the fully customizable mouse shortcuts (already requested too) would be much better, but this would be better than nothing.

Sub-request - option (or even without option) to select all files/items? with middle mouse button on empty space.