Fix transitionTimeout replace

[tamtakoe]

If tooltip hid two or more times in series next show canceled only last remove deferred and tooltip removed after show

[bekos]

@tamtakoe Can you add a test for this? From your description I am not really sure I understand the issue you try to solve. ping @chrisirhc Opinion?

[tamtakoe]

My simplify case: I combined own form error directive with this tooltip. Error tooltip is closed each keypress if form valid and is opened if form invalid. When I open tooltip it cancel last hide deferred, but previous hide deferred was lost (I closed tooltip some times) and it deffered close tooltip which I opened.

Now I enforce check private flag tt_isOpen

} else if (elScope && elScope.tt_isOpen) {
    //TODO Remove tt_isOpen check,
    // when tooltip bug will be fixed https://github.com/angular-ui/bootstrap/pull/1847
    element.triggerHandler('close');
}

Unfortunately I don't know how make tests. I must clone project, make environment... It will be long without help

[chrisirhc]

From what I gather in the explanation, it seems that if the tooltip's hide is somehow more than once before the transition completes, it might close the tooltip even after show is triggered. Working on it now.