add privacy.spoof_english about user.js

[Thorin-Oakenpants]

done - 1c50fde

feel free to bring up any issues - but now I've typed thru the issues (there are more), I'm happy. I feel that anyone already spoofing will have this in there overrides, so I ok with the pref being active and the value 1. I've added an override to mine already

[Thorin-Oakenpants]

bit of a mess edited: less of a mess

/* 4506: disable RFP spoof english prompt [FF59+]
 * 0=prompt, 1=disabled, 2=enabled (requires RFP)
 * [NOTE] When changing from value 2, preferred languages ('intl.accept_languages') is not reset.
 * [SETUP-WEB] when enabled, sets 'en-US, en' for displaying pages and 'en-US' as locale.
 * [SETTING] General>Language>Choose your preferred language for displaying pages>Choose>Request English... ***/
user_pref("privacy.spoof_english", 1);

I would also like someone to test configs on a system that is not english

[Thorin-Oakenpants]

actually we would want it active but at 1 so anyone not using it won't be affected by prefsCleaner and not need an override

[Thorin-Oakenpants]

FYI: if you want to see where additional spoof english code lives .. look at GetMaybeLocalizedString

this covers things like input fields, input validation messages, xml errors, xslt errors .. etc