The Panopticon/Aliens templates removed from most pages

The elimination of aliens and enemies templates from most pages was one of the last things agreed in the old forums and I didn't want it to slip through the cracks.

Accordingly, all templates in Category:Navigation by season have now been stripped from every page but the approrpriate page in Category:Seasons. As agreed in the earlier forum, {{Season 21 aliens}} belongs only on Season 21, and so forth.

This will reduce the massive clutter that had accumulated on pages like Dalek and the Master, which resulted in the stack of nav templates being as much as a literal foot long. It'll also help out a heck of a lot with caching issues since a lot of pages were being unnecessarily linked together, creating caching delays when the templates got changed.

Please do not reinsert these templates. They are only allowed on the corresponding season/series page.