/categories page no longer loads all categories, will be paginated based on ACP setting
/category page no longer loads all subcategories, will load x number of subcategories based on ACP setting per category
/recent, /unread, /popular, /top will no longer loads all categories.
/search page used to load all categories in the variable categories, this has been renamed to allCategories. categories is used for the results returned when categories are searched.
Required changes for custom themes