When the iOS keyboard is open and up, the positioning gotten by
getBoundingClientRect will display a `top` value that is short by the
height of the keyboard, which will usually end up placing things north
of the top of the screen.
By changing to jQuery $.fn.offset instead, the positioning appears to
be correct in all cases; iOS keyboard up, down, and desktop usage.
Fixes: #6366.
Trac #1479
All our typeaheads use this, but I made it an option that must be enabled
explicitly since it is not default bootstrap behavior.
(imported from commit 97852dc407d1f6dbe46b5fdd2c56d3ed8c6718d2)
The option caused some race conditions on Firefox, and it is
really made moot by the naturalSearch option anyway.
(imported from commit dc7080c905ced9b2f4ad4275d82549acf09a59f7)
Brock Whittaker
Rohith Asrk
Igor Tokarev
Leo Franchi
Kevin Mehall
Steve Howell
Tim Abbott