Fixed: 9.	Delete all quote line items (top level and sub level) checked at the same time.  Currently this only works on the first submission of the quote.  Changes require that sub level be deleted first.
* Implemented Ajax Update Panel for deleting Items.
* Implemented check/uncheck all sub items while checking/unchecking parent items respectively.
* Changed project's .Net reference from 3.5 to 4.0 to support "DataItemContainer" control's property for GridView under "Checkbox1_OnCheckedChanged" event handler method.