Scroll to top about datepicker-for-bootstrap

[Aymkdn]

I've fixed it (at least I think).
Now it's more efficient : if the calendar appears under the window (for example when clicking on a field at the bottom of the window) then we scroll the document. If the calendar is already inside the window, then we do nothing.
And the scroll will be only vertical (not horizontal)

[Hani79]

That works beautifully! Thanks!