Patch Set 5: I would prefer that you didn't submit this

(1 inline comment)

rebased to adapt build to new target version 1.0.0

I like this approach it looks much better now :-)
Mainly since the layout is much more clear and has the right focus for the task we want to accomplish with the staging view

I also like the idea to use the current selection to decide which repo is of interest.

Though some ideas for further improvement:
- the staging view should have an explicit label showing for which repository the status is currently being displayed
- the staging view should also follow if the focus is set on a repository using the repositories view
- the file lists should be sorted, maybe there could be options for different sorting criteria (alphabetically, file status)
- on a big screen this layout works well on a small laptop screen we need a way to see the full path of the files in the lists, this requires more horizontal real estate for the file lists (maybe we could have an option to stack the two lists vertically) or we make the lists themselves more compact by something similar to compressed package option in package explorer