title: Selenium IDE button not displaying on Firefox
body: <p>I am trying to add Selenium IDE 2.9.1.1 add on to Firefox 52. But even after restarting, IDE button is not visible. Downgraded FireFox to 49.0.2 and still facing the issue. I have already added Firebug and FirePath.
  Tried some trouble shooting tips I found in Google but no luck. Like downloading IDE from Seleniumhq site etc. Can someone please help me resolve this?</p>