Added results CRUD and result detailed view

ref-test/quiz/static/js/quiz.js

@@ -363,7 +363,7 @@ function render_question() {
 function check_answered() {
     var question = questions[current_question];
     var name = question.q_no;
-    if (question_status[current_question] == 0) {
+    if (question_status[current_question] == 0 || question_status[current_question] == -1) {
         if (!$(`input[name='${name}']:checked`).val()) {
             question_status[current_question] = -1;
         } else {