As a user I want to see most important stats about my content in my browser overview so i don't need to switch to other tools.

AC:

• Add popup overlay per row of grid/tree view in browser subapp
• Size of the popup should be configurable
• Add metrics icon button at the end of each row to toggle visibility of the popup
  • white icon bg = hide popup (default)
  • grey icon bg = show popup
• When resizing browser window make sure the popup moves accordingly

Pointers to the solution:

• try to re-use the tooltip add-on that is currently used for the dialog field descriptions
• make sure that the popup is created lazily (i.e. we don't create a bunch of them proactively for each and every cell)
• make sure that the popup either stays consistent with the page changes (scrolls, clicks on other elements etc) or disappears (like we do with field descriptions).