Unpinning and stuff.

Say now there are three files like so:

`File 1`

`File 2`

`File 3`

And `File 1` and `File 3` are pinned.

Then select them all in the following order, `File 1`, `File 2` and `File 3` (because `File 3` is last and is pinned then the button will say "Unpin"). When you click "Unpin" it says, 3 files unpinned which is incorrect as only two were unpinned.

Also, try doing the opposite, it isn't quite the same but still has the wrong number of pinned files.