Fix compatibility with jQuery 1.9+
Fix compatibility with jQuery 1.9+

$.browser is gone there, but still we have to disable cache for MSIE.

COUCHDB-1668

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb