Issue: BB-Code Cache Missing During Import

When importing articles that contain links, I sometimes get an error that the BB-Code cache is missing.

While I see no logical reason for this to be the case, we should not even be using the BB-Code cache to test template parsability in this case, but actually the current active tag list, since it will contain custom BB-Codes that don't exist in the database, and will include tags that are actually relevant to the current parse.

However, this all requires that the tag list is not truncated until immediately before the BB-Code cycle. Currently during caching it's truncated before the parse even begins.

Fixed for the next build.