Tabbing in non-modal forms triggers modal to open

[tboyko]

Relevant to 2.0-wip branch.

When tabbing through the elements of a non-modal contained form, a modal is created and brought to focus. This appears to be an issue introduced by the recent patch for issue #30.

A potential fix would be to check whether a modal is currently being displayed (or is currently in focus) before running the setTimeout() method. I'm not familiar with the most lightweight way of doing this for this particular implementation.

[tboyko]

Enclosing setTimeout() with the following seems to work, but again, is probably not the lightest-weight method:

if ($('.modal-backdrop').length != 0) {
  // setTimeout() call
}