Article update (minor): Firefox Configuration Guide for Privacy Freaks and Performance Buffs

I made a minor update to the Firefox Configuration Guide for Privacy Freaks and Performance Buffs wherein i added the following note regarding the Canvas Blocker extension:

Note: I'm not convinced that Canvas Blocker (should be named Canvas Spoofer because it's it's intended to obfuscate by default) is necessary as long as privacy.resistFingerprinting is enabled (and it is in the 'ghacks' user.js).

One potential issue with not using Canvas Blocker is the JavaScript API, window.name. I'm not sure whether the Firefox pref privacy.resistFingerprinting covers this. I'm trying to find out and will post an update if RFP does not clean window.name.

I also added a note regarding the no-workers: * true setting in uMatrix.

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