Foren / Cotonti / Core Labs / Archive / Umfrage: Move adminqv to core

As plugin since its admin you gain or lose nothing.

However it removes 1 TPL file, the links can just then be placed into core TPL. And maybe add a few lang strings.

Updater code thats in adminqv, will end up being moved to a different plugin, or i'll likely just make it core.