feat: sort invite codes by last update

They used to be sorted by the code which was not helpful

fixes #8806 (closed) requires deploy of new design docs to the platform

mentioned in merge request platform!133 (merged)

@varac, I made it so invite codes are sorted by the last time they were updated (created or used). I also added another column to the table for that so one can see when a code was created and when it was used.

This is not quite what you were asking for (sorted by creation date). I thought it might also be interesting to see the recent usage of invite codes. Does this make sense to you as a first step?

Sure, this is good!

mentioned in commit 92c5e35e

merged