.modal-open class offsetting body unnecessarily by 15px

[brod-ie]

body.modal-open,
.modal-open .navbar-fixed-top,
.modal-open .navbar-fixed-bottom {
    margin-right: 15px;
    margin-right: 0: // fix
}

In my individual use case, and over on the (getbootstrap.com)[http://getbootstrap.com/javascript/#modals] docs, the above CSS is causing an unnecessary margin change on body and fixed nav bars. Removing it or setting it to 0 fixes the issue.

[cvrebert]

Duplicate of #9855. Please search next time.