Buffering is likely eating our commands, causing us to wait forever for
responses.. Let's hope setting the buffer size and counts to 1 each will do
the trick :/.

It clears our error console, which makes debugging hard otherwise.

We'll let them tweak the Firefox prefs for this.

Offline Storage can be used as a third party tracking vector, and IndexedDB
seems impossible to clear during New Identity.

Also emit a private browsing session clearing event for good measure.

Technically, we exempt all browser-sourced content from third party auth
stripping.

Turns out some plugins handle multiple mime types.

Sometimes we seem to get a delayed plugin registration event :/.

Might as well have everything in a clean state before we even register the
plugin observer.

Also tweak the text slightly.

We made them way easier to enable with #3100. We should at least warn people
before we let them do it.

Fixes a crash issue on Windows.

Forgot to obey the spoof_english prompt, and we should use TBB defaults.

It's pretty much just a part of TBB anyways.

Just in case the crash bug flares up again.

Defensive-coding measure. We're probably just going to make our SOCKS port
fixed instead.