[XTR] AddOn Tab Groups

[XTR] AddOn Tab Groups 1.0.0

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Very good. Hopefully some future version of XF will display all your addons as nice and neat as this. If you use a lot of addons, it's surprisingly easy to overlook a couple if you ever have to reenable them after disabling them all for testing or after upgrading, and you might also be surprised just how many disabled ones you still have hanging around that you probably just need to go ahead and delete entirely. This helps keeping track of all that.