Fixes: netbox-community#17320 - New screenshots for 4.1 UI (netbox-community#17331)

* New screenshots for 4.1

* Remove footer info

* Add bookmarks to dashboard to match previous

* Reverse ordering of bookmarks

* Fix colors of cables in cable-trace.png

* New screenshots for 4.1

* Recapture screenshots with better rendering gradient

* Better sidebar on cable-trace.png

Author: bctiemann