Add flag to file browser for limited list return

[alexsielicki]

Returning the entire /usr/ directory takes too long on some systems. Let's figure out a way to limit the return so the file browser only shows first x rows, then as user scrolls, more rows become visible.

[Mletter1]

on the linux side of things I do not think that this is possible without still pulling the full list on linux

[Mletter1]

because of the previous comment I think we have to scrap this as no matter what we do linux will always ask for the full list and this is what slows down the return not the data itself