From the FF GUI open "tools">click "add-ons">from there you should be able to enable disable what you want or don't want.
Hope this helps. I use FF only to check issues other than than that I use Chrome.
Dell Inspiron, Win7x64 SP1, Comodo Firewall 5.12 w/D+, MalwareBytes Free 2.1--HP Envy Win8.1x64, MalwareBytes Premium 2.1--Both systems Avast Free v2015.10.2,2218, Super Anti-Spyware, Spyware Blaster, MCShield, Unchecky, Firefox (latest build), Google Chrome (latest build) and, various browser security tools.
When you do something, do it with a purpose and do it on purpose.