On large categories, both the articles and subcats are paged. This is fine, but
the totals given for both articles and subcats are incorrect.
Test case: Category:Business
Expected result: "There are [correct total] subcategories to this category."
Actual result: "There are 17 subcategories to this category." - it listed only
the ones on the page.
Quick fix: change text to say "on this page" - then it's true, but not so useful
for the reader.
Better fix: show the correct total for the entire category.