twbs/bootstrap — pull request #12883 by thcipriani (2014-02-28 23:13:28+00:00)
Title: Add option to prevent body shift on modal open

* Add `scrollpad` option to modal.js, disable by default
* Add description for `scrollpad` modal option in javascript docs
* Addresses issue #9855 using @fat's method from [his comment](https://github.com/twbs/bootstrap/issues/9855#issuecomment-30109204)