fixes #2055 - recrusively search `data` (#2056)
fixes #2055 - recrusively search `data` (#2056)

If a `field` is reference a nested value (e.g., `location.city`) it was not being searched; only top level fields were.  This should fix that.
djhvscf/bootstrap-table,horken-w/bootstrap-table,CIFullCalendar/bootstrap-table,djhvscf/bootstrap-table,y1170328179s/Bootstrap-table,wenzhixin/bootstrap-table,wenzhixin/bootstrap-table,wenzhixin/bootstrap-table,Flounn/bootstrap-table,djhvscf/bootstrap-table,CIFullCalendar/bootstrap-table,danielsharvey/bootstrap-table,djhvscf/bootstrap-table