jquery.couch: fix document copying

To COPY a doc the client must specify the target doc id in Destination
header. Additionally, it may add the revision parameter if document
already exists and we want to copy over it.
Update jQuery UI to 1.9.2

Fixes COUCHDB-1891
Futon: support document copying

Based on Patrick Antivackis work. Thanks!

COUCHDB-241
Support for user configurable SSL ciphers