Changed retry icon for whole task for consistency.

Accepts answered and attempted xapi verbs as well to mark a question as answered.
HFJ-946

css/questionset.css

@@ -107,7 +107,7 @@
 .questionset-results a.h5p-button.qs-retrybutton:before {
   font-family: 'H5PFontAwesome4';
   padding-right: 0.5em;
-  content: "\f021";
+  content: "\f01e";
 }
 
 .qs-footer > .next, .qs-footer > .finish, .qs-finishbutton {

js/questionset.js

@@ -391,7 +391,9 @@ H5P.QuestionSet = function (options, contentId) {
 
       question.on('xAPI', function (event) {
         var shortVerb = event.getVerb();
-        if (shortVerb === 'interacted') {
+        if (shortVerb === 'interacted' ||
+            shortVerb === 'answered' ||
+            shortVerb === 'attempted') {
           $('.progress-dot:eq(' + currentQuestion +')', $myDom).removeClass('unanswered').addClass('answered');
           _updateButtons();
         }