Disable dom.event.clipboardevents.enabled

Author: pyllyukko

user.js

@@ -83,6 +83,8 @@ user_pref("dom.battery.enabled",				false);
 user_pref("dom.telephony.enabled",				false);
 // https://developer.mozilla.org/en-US/docs/Web/API/navigator.sendBeacon
 user_pref("beacon.enabled",					false);
+// https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference/dom.event.clipboardevents.enabled
+user_pref("dom.event.clipboardevents.enabled",			false);
 
 user_pref("media.webspeech.recognition.enable",			false);