Feature: allow changing arrow key actions

[stom66]

It would be nice if we could change the action of the up/down arrow keys to change the currently selected torrent instead of scrolling the window.

This would be very helpful when renaming multiple torrents. We can trigger a rename with F2, but currently the only way to select the torrents appears to be via the mouse.

[qu1ck]

You have to select first torrent with a click but after that arrow keys up/down work to switch to adjacent torrent. Does it not work for you?

[stom66]

It works when I initially select a torrent, but stops working after renaming it.

To recreate: select a torrent, press Arrow Up/Down and confirm active torrent changes, press F2 to rename, press Enter to confirm, press Arrow Up/Down. Now instead of changing the active torrent the window now scrolls.

I guess I should change this from Feature to Bug.

[qu1ck]

Yeah, I can reproduce. This is related to focus issues discussed here #303

I'll see if I can fix this particular one without the whole focus rework that is needed for proper tab key navigation.

[stom66]

Awesome, much appreciated!