finish add Prescription

lib/screens/prescription/prescription_text_filed.dart

@@ -44,7 +44,7 @@ class _PrescriptionTextFiledState extends State<PrescriptionTextFiled> {
                   list: widget.elementList,
                   attributeName: '${widget.keyName}',
                   attributeValueId: widget.elementList.length == 1
-                      ? widget.elementList[0]['${widget.keyId}']
+                      ? widget.elementList[0]['${widget.keyId}'].toString()
                       : '${widget.keyId}',
                   okText: TranslationBase.of(context).ok,
                   okFunction: (selectedValue) =>

lib/widgets/shared/dialogs/dailog-list-select.dart

@@ -46,7 +46,6 @@ class _ListSelectDialogState extends State<ListSelectDialog> {
   }
 
   showAlertDialog(BuildContext context) {
-    // set up the buttons
     Widget cancelButton = FlatButton(
         child: Text(TranslationBase.of(context).cancel),
         onPressed: () {
@@ -58,9 +57,7 @@ class _ListSelectDialogState extends State<ListSelectDialog> {
           Navigator.of(context).pop();
           this.widget.okFunction(widget.selectedValue);
         });
-// set up the AlertDialog
     AlertDialog alert = AlertDialog(
-      // title: Text(widget.title),
       content: createDialogList(),
       actions: [
         cancelButton,