**As** a user of meeting series
**I want to** have a separate action to end the meeting series
**so that** I can cancel / end meeting series early without fiddling with the form

**Acceptance criteria**

* Action menu entry in the meeting series  "End meeting series"

* Danger confirmation dialog: "Ending the series will remove any future Begin of the insertionopenEnd of the insertion Begin of the deletion scheduledEnd of the deletion or Begin of the insertionscheduled meeting occurrences."End of the insertion Begin of the deletion instantiated occurrences" (text tbd)End of the deletion

* On confirmation

* Sets "end\_date" to today

* Removes any future scheduled meetings

* Removes any future instantiated meetings