Issue: Internal links are not imported as the new links

- It is impossible to tell whether the currently open XF import logs refer to the same database that the wiki is in. Sessions are not persistent and the logs are not linked to a session id. In order to do this, the user performing the import would have to manually enter the name of the database table containing the archived log into a config field.
- The XF importer does not convert URL tags pointing to say "showthread.php" to "index.php?threads/" either. The XF importer does not even convert NOPARSE to PLAIN.
- Truly internal links, such as using the THREAD BB-Code or the POST BB-Code, should use the XF URLs anyway, although the XF importer does not convert the IDs within those tags.

If you are just importing one forum, the alternative is to use XenForo's import option to preserve the original IDs when importing your forum. This would avoid the issue altogether, and it would allow our importer to remain consistent with XenForo's importer with respect to the same URLs.

This is standard behavior in xenforo importers.

I do preserve ID's and I have redirects in place. So the links will work.
But it would be more elegant to link directly to the xenforo location, as there are many thousands of such links.