* Menu item "Sprint planning"

* ~~Add subheader (suggestion from Alex: use the subheader filter slot for the buttons)~~

* Begin of the insertion~~SelectEnd of the insertion Begin of the deletion SelectEnd of the deletion the displayed backlog via a Begin of the insertionsingle-select~~ `~~SelectPanel~~` ~~->End of the insertion Begin of the deletion single-select `SelectPanel` ->End of the deletion synchronous implementation will suffice as a first Begin of the insertionstep.~~End of the insertion Begin of the deletion step.End of the deletion

* Introduce `+ Sprint` button, there will no longer be a `+ Version` button

* ~~About splitting the view: consult Henriette~~

* Begin of the insertion~~\[niceEnd of the insertion Begin of the deletion \[niceEnd of the deletion to have\] Make panes resizable (would need to port component from Begin of the insertionAngular)~~End of the insertion Begin of the deletion Angular)End of the deletion

* Introduce a separate component for the `BacklogPane`

* Consider how to represent the view as a URL

* When you open the details view for a Work Package: keep the current responsive behavior, details to the right.