Computer novice, here. Tonight I downloaded an addon for firefox called "Google Translator", which is supposed to translate sites that are in a foreign language. It did its job, but I decided I didn't want it. But I'm not able to disable or remove it. In fact, I'm not able to remove any of my addons, now. I tried to reset firefox, but they're all still there, even though my bookmarks are now gone. Google search is visible, but won't work. Also, the back button on firefox is greyed out, and so I can't go back a page.
My operating sysetm is Linux Mint. My previous operating system was Windows XP, and I only switched to Linux because it was free, and I don't really know how to use it, so any help would be greatly appreciated. Thanks!