Disable Tab Detach 2 wót zupffwhy

This add-on could be redundant when Mozilla ships Firefox 74.

Forked from Disable Tab Detach.
Moving to an existing window is not prevented.
Temporarily disable the add-on by clicking the browser action button.
Improved handling of pinned tabs.
Revert even if multiple tabs are highlighted.
This is just a quick hack. I haven't tested well.

You need to allow the add-on to run in private windows if you use private windows.

I invite you to explore and help me translate this add-on in Crowdin.

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