Prevent Services.downloads.cleanUp() from resource://app/components/DownloadsStartup.js
(draft for #5)
Prevent Services.downloads.cleanUp() from resource://gre/components/DownloadsStartup.js
(Firefox 20 and older)
(#5)
Correctly change panel width in Firefox < 20
(was broken by db1991b231241251646b572fbb8ea93eb99a3eb8 commit)
(#4)