I/Q tool file selector randomly jumps to current selection

[argilo]

Steps to reproduce:

1. Create enough I/Q recording files such that they take up more than one page in the I/Q tool.
2. Open the I/Q tool and click on the first recording file.
3. Scroll down to the bottom of the list of I/Q files.

Within one second, you'll be returned to the top of the list. This makes it very difficult to select the I/Q files you want.

This happens because CIqTool::timeoutFunction executes once per second and calls CIqTool::refreshDir, which clears and rebuilds the list, then calls QListWidget::setCurrentRow. I imagine there's a better way to keep the file list up to date.

[vladisslav2011]

I've noticed this issue too.
It may fixed by merging #1011