Fix variable name formatting in JS files

static/js/mentoring.js

 function MentoringBlock(runtime, element) {
-    var progress_template = _.template($('#xblock-progress-template').html());
+    var progressTemplate = _.template($('#xblock-progress-template').html());
 
-    function render_progress() {
+    function renderProgress() {
         var data = $('.progress', element).data();
-        $('.indicator', element).html(progress_template(data));
+        $('.indicator', element).html(progressTemplate(data));
     }
 
     function callIfExists(obj, fn) {
@@ -24,7 +24,7 @@ function MentoringBlock(runtime, element) {
         });
 
         $('.progress', element).data('completed', results.completed ? 'True' : 'False')
-        render_progress();
+        renderProgress();
     }
 
     $(element).find('.submit').bind('click', function() {
@@ -40,5 +40,5 @@ function MentoringBlock(runtime, element) {
         $.post(handlerUrl, JSON.stringify(data)).success(handleSubmitResults);
     });
 
-    render_progress();
+    renderProgress();
 }

static/js/quizz.js

 function QuizzBlock(runtime, element) {
     return {
         submit: function() {
-            var checked_radio = $('input[type=radio]:checked', element);
+            var checkedRadio = $('input[type=radio]:checked', element);
 
-            if(checked_radio.length) {
-                return checked_radio.val();
+            if(checkedRadio.length) {
+                return checkedRadio.val();
             } else {
                 return null;
             }
         },
         handleSubmit: function(result) {
-            var tips_dom = $(element).parent().find('.quizz-tips'),
-                tip_html = (result || {}).tip || '';
+            var tipsDom = $(element).parent().find('.quizz-tips'),
+                tipHtml = (result || {}).tip || '';
 
-            if(tip_html) {
-                tips_dom.append(tip_html);
+            if(tipHtml) {
+                tipsDom.append(tipHtml);
             }
         }
     }