Send attachment headers in multipart responses

Closes COUCHDB-1368

Patch by:
 - Jan Lehnardt
 - Robert Newson
Backport 1.0.4 release notes
reflect that we reverted 1334 in the various change log files
update jquery to 1.8.3
update erlang-oauth to 1.3.0
Update snappy to 1.0.5
update ibrowse to 4.0.1