Disable gestures on mobile

[Giorgio Maone]

Everyone, this has been fixed more than 12 hours ago, but it's been waiting since then for approval for AMO.

See https://noscript.net/changelog for reference:

v 13.6.5
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x [UX] "S" gesture: change default to disabled
x [UX] "S" gesture on-screen description and lower
activation threshold (issue #519)

v 13.6.4
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x [UX] Add option to disable/enable "S" drawing activation
gesture

[Guest]

Firefox addon update is available, works.

Thank you very much