Refresh Deletereason-dropdown

I went around to a few MW installations on the web, and all that had
modified this message added "Spam". (Also per the bug.) And "Broken
redirect" seems a sensible, universal addition as well.

Also putting in order of "commonness" and fixing the inconsistent spacing
of the bulleted list - it annoys me every time.

Bug: 47573
Change-Id: If50f30df95f969f0b56a9058fc57e7c542b7215a
Merge "Refresh Deletereason-dropdown"