Updated purchase date format in hardware/bulkedit
Updated purchase date format in hardware/bulkedit

The Purchase date box in hardware/bulkedit was a different style
to the normal hardware/{id}/edit

It also prevents a strange bug I see in firefox when clicking the old datepicker
it presented 2 datepicker boxes

uberbrady/snipe-it,snipe/snipe-it,uberbrady/snipe-it,mtucker6784/snipe-it,mtucker6784/snipe-it,mtucker6784/snipe-it,uberbrady/snipe-it,uberbrady/snipe-it,mtucker6784/snipe-it,mtucker6784/snipe-it,uberbrady/snipe-it,snipe/snipe-it,snipe/snipe-it,snipe/snipe-it