This patch ditches use of the tablerenderer in favour of just showing the most recent posts, and linking off to view/artefact.php for the rest. I added pagination to assist that.

Needs cleanup for sure, but for now it's there and it works.

I've not touched some strange things I saw while doing this, such as the 'resumefive' and 'resumefour' classes on the tables. I can only assume they're used somewhere, although grep gives no clues.

now each plugin can say whether it can be disabled or not. defaults to true

When uploading files with only digits in the extension, append more digits on clash rather than trying to preserve the extension

Workaround for having to click folder names twice to change folder after removing items from select list