**Motivation**
A confirmation prompt is considered very useful by some and very hindering by others. This is a clear case of a useful user setting.
**Task**
[] For users who have the rollback right, show a new setting in the preferences view:
[] As the last bullet point in the `Appearance` tab's `Advanced Options` section, add a checkbox with the label `Show a confirmation prompt when I click on a rollback link.`
[] When the checkbox is checked, users should see the confirmation prompt on rollback links. When it is not checked, they should not see the confirmation prompt on rollback links.
[] Initially, the user setting should be set to the wiki default
**Notes**
Before this ticket is realized, the wiki defaults should have been set, so people don't experience unexpected changes in their user settings