the new overridable URL field will cause problems with caching (esp. static caching)

Created by Gerrit on 2009-01-22; known on 2009-01-26; judged wrong by Gerrit on 2009-01-30.

• Gerrit estimated 80% on 2009-01-22
• Matt estimated 20% and said “nah – this’ll work” on 2009-01-22
• Gerrit   judged this prediction wrong on 2009-01-30.