PAP-625: add option “not classified”.

lib/pages/feedback/send_feedback_page.dart

@@ -410,7 +410,7 @@ class _SendFeedbackPageState extends State<SendFeedbackPage> {
                             ),
                           )),
                   SizedBox(
-                    height: 45,
+                    height: 100,
                   ),
                 ],
               ),
@@ -418,14 +418,15 @@ class _SendFeedbackPageState extends State<SendFeedbackPage> {
           ),
         ),
         bottomSheet: Container(
-          height: MediaQuery.of(context).size.height * 0.09,
+          height: MediaQuery.of(context).size.height * 0.12,
           width: double.infinity,
           padding: EdgeInsets.all(15.0),
           child: Center(
             child: Container(
-              height: MediaQuery.of(context).size.height * 0.8,
+              height: MediaQuery.of(context).size.height * 0.1,
               child: SecondaryButton(
                 label: TranslationBase.of(context).send,
+                textColor: Colors.white,
                 disabled: (titleController.text.toString().isEmpty || messageController.text.toString().isEmpty|| messageType == MessageType.NON),
                 onTap: () {
                   final form = formKey.currentState;
@@ -556,6 +557,30 @@ class FeedbackTypeDialogState extends State<FeedbackTypeDialog> {
                   height: 2.5,
                   color: Colors.grey[500],
                 ),
+                Row(
+                  children: <Widget>[
+                    Expanded(
+                      flex: 1,
+                      child: InkWell(
+                        onTap: () => setMessageDialogType(
+                            MessageType.NON),
+                        child: ListTile(
+                          title:  Texts(TranslationBase.of(context).notClassified),
+                          leading: Radio(
+                            value: MessageType.NON,
+                            groupValue: messageTypeDialog,
+                            activeColor: Theme.of(context).primaryColor,
+                            onChanged: (MessageType value) =>
+                                setMessageDialogType(value),
+                          ),
+                        ),
+                      ),
+                    )
+                  ],
+                ),
+                SizedBox(
+                  height: 5.0,
+                ),
                 Row(
                   children: <Widget>[
                     Expanded(