Notification for content update

[Hester40MT]

There is a wish on changing this:

Change Content Manager behavior with "Updates are available to download" notification

This was originally reported as a Sim Update 10 bug report. However, it was determined that it was not a bug and that it was working as designed. With permission, I have moved this into Wishlist and changed this to a feature request. (I also apologize in advance: This Wishlist topic is way too long, but you need the background in order to understand the problem. Jump to the proposed solution here.) Background: Some items in the Content Manager come as a bundle: for example, world updates. A w…