Update user.js
Update user.js

* fix tab spacing (two tabs)
* removed duplicates #32
* fixed security.OCSP.enabled #30
* Fixed spelling mistake in the default search engine #29
pyllyukko/user.js,Toromtomtom/user.js,Toromtomtom/user.js,valdeza/personal-privacy-security-firefox-user.js,nodiscc/user.js,pyllyukko/user.js,nodiscc/user.js