Better workflow for users who bounce between various domain-filter pairs

[ssokolow]

In legacy DownThemAll, one of the things I relied on heavily was the history dropdown for the quick filter field, as a way to clear the quick filter for Tumblr, then restore filters like dl.humble (for batch-downloading Humble Bundle purchases) for other sites.

Adding a history dropdown to the quick filter box would be very welcome, but supporting "remember filters on a per-domain basis" would be even better.

(However, both would be best, since it would mean that, when I visit a new domain for the first time, I'd have quick access to quick filters I've used before.)

EDIT: Having per-domain filter persistence would change the "Toggle options" button from something I consider such a niche thing as to chuckle at it to something I actively use.