Only accept application/json from jquery.couch.js
Only accept application/json from jquery.couch.js

Since Filipe's fix for parsing the accepted content types at r1041103, returns from
$.ajax could return a 302 that redirects to an HTML page. Functions like activeTasks()
expect JSON and barf when fed HTML.

git-svn-id: c1f8a8ec0b3bb2e99ab3413722f81f687760e79c@1070279 13f79535-47bb-0310-9956-ffa450edef68

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