Soft delete of wiki pages
If you delete a wiki page, it removes the page's whole history, and the delete action isn't listed in the activity.
This might technically be the correct behaviour for this kind of delete, but I need to delete a page that is no longer needed, but keep the history (it's a wiki after all!) and have the action listed in the project activity like anything else.
Most other wiki delete functions do this - so having redmine's do a permanent delete is rather a suprise.
Some wikis just let you delete pages by saving an empty page, but Redmine doesn't let you do this.