Pass request query string to OAuth1 authenticate URL function.

This allows the authenticate URL to vary based on information in the
request (such as the login style). See
https://github.com/meteor/meteor/pull/2394#issuecomment-55939531
OAuth loginStyle param should match service name
Implement a `meteor debug` command.

Summary:
The `node-inspector` NPM package was added to the dev_bundle by this
recent commit: 64a624ae5c36a30c10e20216400f7e751d4963b2

Task: https://app.asana.com/0/15750483766338/16241466809965

Test Plan:
Add `debugger` statements to server code, run `meteor debug`, visit the
node-inspector URL in a browser, continue the application, and verify that
the debugger stops at the `debugger` statements that were set.

Reviewers: nim, slava, emily, avital

Differential Revision: https://phabricator.meteor.com/D827