Fixed handling of JOBS urls - remove any data that doesn't have a proper id (eg: 7777777)

Most records have id format == 9999999 (7)
Some job records also have that id (if we can find it during scraping)
Some job records do NOT have that format and instead have format: "JOB: <url><title>"
These records aren't very important, aren't very common, and cause problems (in ui, in urls, in parsing id lists, etc.)
Removing them here seems the best option (as opposed to removing the data at the scraper, which is irrevocable)
Switched from JSONP to CORS (setup was done by Cloudant in the backend to enable cors)
With CORS, fixed getMultIds
    - It was doing a series of individual gets, and then merging them together.
    - Now it does a single multi-key get