Popup: immediately search on type

[marcustyphoon]

Idea: it would be a nice UX flow to click the XKit Rewritten menu button and immediately begin typing the name of the script one desires to toggle/change a preference in.

I don't know that there's a way to do this without drawbacks; off the top of my head, immediately selecting the input box would mean the down arrow wouldn't scroll the popup anymore (for those without nice trackpad scroll/scroll wheel), and I dunno if there are accessibility implications.

Would make a slick power user feature if possible though! (I find myself scrolling down and looking for the correctly-colored icon rather than mousing to the search box to type, at the moment.)