Tag mods: Move/link tag merge tool

Description of your request or bug report:

Tag mods don’t need the tag merge tool often, but when we do, it’s not available in the same tag backend where we see reports and tag information - it’s over on a completely different part of the site ( Tags | Natively ) that is not easily found and isn’t linked to the tag backend. I think this tool should be moved over to where the rest of the tag tools are, or at least linked there, so tag mods can find it more easily.

This should also be done. Added a link to the top header in the tag backend