ognizing a mediation privilege where litigants can rely on the confidential treatment of everything that transpires during mediation . . . . Lake Utopia Paper Ltd. v. Connelly Containers, Inc., 608 F.2d 928 (2d Cir.1979); Folb v. Motion Picture Ind. Pension & Health Plans, 16 F.Supp.2d 1164, 1173 (C.D.Ca. 1998