Allow integration forms to use admin widgets and the current HttpRequest.
Review Request #8167 — Created May 16, 2016 and submitted
The integration configuration forms now allow the use of admin widgets, like the side-by-side multi-select field. The necessary JavaScript files are loaded onto the page to support those widgets. The configuration forms also now take a request parameter, which allows subclasses to provide options based on the request (such as restricting objects for the configuration for the owning user or organization).
Made use of the request and admin widgets in an integration.