Added jQuery dependency for superfish/supersubs.
App settings model now logs in and out with both the LingSync and OLD APIs.
XHR in base model now sets Content-Type to application/json on CORS requests.
App settings GUI has a serverType (lingsync or old) field/display.
Notifier is now passed the app settings model on initialization; failed auth attempts now work with both web service APIs.
Deleted some `console.log`s.
Merge branch 'feature-talk-to-couchdb' into develop