做个简单的记录，方便以后重装
升级
update notifer
标签页：
tab control, undo closed tabs button, ctrl-tabFoxTab, close repeated tabs, close tab by double click
广告阻止：
adblock plus,flashblock,
文件下载：
flashgot, pdf download, download manager tweak
书签：
delicious bookmarks,read it later
其他：
torbutton