QUASAR: Whitelisting input validation before final call to C++ AddEntry

Whitelisting technically done in client side javascript, but can't hurt to 
do some more after in case the addItem method is overridden.

close #658
QUASAR: Close #662 && #663

Both TODOs are  for I.E. support, with the move to jQuery they're invalid.

close #662
close #663