There is a new App Extension from Kenneth (tsangk) which allows every user to use an "Autocomplete" function and every admin a "Mass Delete Tool" for pages (or whole categories) and a new "File manager". Please have a look on his Extension Documentation!
Another description you can find on the Handbook:Mass Delete Tool.
It is working at the moment on Chrome and Firefox.
And a backup before any mass deletes is recommended! » More (15 comments)