All the images you post in the project topics are listed in a new page called "Files".
This files and images browser allow you to filter down the images you shared. By clicking on one of them, you access directly to the context of the discussion where it was posted! So while you are just commenting a discussion, you are at the same time building a library of images and files that can easily be accessed again.
By clicking on one of the 2 icons you see on top right of the screen
You can switch to table view to have more details about the file.
When you click on one of the image / file, you are moved directly to the discussion context when it was shared.