99 - Long user watch list causes page loading issues

[smithellis]

• Added pagination to view and template

[escattone]

r+wc

Pagination depends on a consistent ordering of the individual items, but since the ordering is currently by content_type only, it's possible that the individual items aren't consistently ordered -- since for example a user could be watching hundreds of the question content type and there would be no consistent ordering of the hundreds of individual questions. I would recommend changing the order_by("content_type") to order_by("content_type", "id") so that ordering is guaranteed at the level of individual items.