MDL-60535 quiz: question bank button styled

mod/quiz/classes/question/bank/custom_view.php

@@ -167,6 +167,7 @@ class custom_view extends \core_question\bank\view {
             $params = array(
                     'type' => 'submit',
                     'name' => 'add',
+                    'class' => 'btn btn-primary',
                     'value' => get_string('addselectedquestionstoquiz', 'quiz'),
             );
             if ($cmoptions->hasattempts) {

mod/quiz/styles.css

@@ -1066,6 +1066,11 @@ table#categoryquestions {
     padding-right: 0.3em;
 }
 
+.questionbankformforpopup .modulespecificbuttonscontainer {
+    padding-top: 10px;
+    padding-left: 0;
+}
+
 .quizquestionlistcontrols {
     text-align: center;
 }