Attribute to enable paging in listview and eventview

[itssimple]

It would be neat, if we had the ability to use some sort of paging instead of the normal showmore available in the detail event lists.

Preferably it would be implemented, so that the paging is done client side, since the WP endpoints tend to be slow.
So technically, we will still load all items, but just limit what's visible and not.
It also gives us the ability to be able to change the number of visible items on the fly, instead of doing callbacks to the server.