underscore doesn't work in lms

recommender/recommender.py

@@ -936,7 +936,6 @@ class RecommenderXBlock(HelperXBlock):
         frag.add_css(self.resource_string("static/css/tooltipster.css"))
         frag.add_css(self.resource_string("static/css/recommender.css"))
         frag.add_css(self.resource_string("static/css/introjs.css"))
-        frag.add_javascript(self.resource_string("static/js/src/underscore-min.js"))
         frag.add_javascript(self.resource_string("static/js/src/jquery.tooltipster.min.js"))
         frag.add_javascript(self.resource_string("static/js/src/cats.js"))
         frag.add_javascript(self.resource_string("static/js/src/recommender.js"))

recommender/static/html/recommender.html

@@ -116,7 +116,7 @@
                         <%include file="resourcebox.html" args="id=elem['id'],title=elem['title'],votes=elem['votes'],url=elem['url'],description=elem['description'],descriptionText=elem['descriptionText'],isProblematic=flag_mode,problematicReason=reason,voteMode=vote_mode,endorseMode=endorse_mode,endorsedReason=endorsed_reason" />
                     % endfor
                 </div>
-                <div class="recommender_resourceAddButton" role="button" tabindex="0">Add new resource &gt;&gt;</div>
+                <div class="recommender_resourceAddButton" role="button" tabindex="0">Addqq new resource &gt;&gt;</div>
                 <div class="recommender_resourceExportButton" role="button" tabindex="0">Download resources</div>
                 <div class="recommender_resourceImportButton" role="button" style='display: none;' tabindex="0" aria-hidden="true">Upload resources</div>
                 <div class="recommender_clearFix"></div>

recommender/static/js/src/recommender.js

@@ -27,10 +27,16 @@ function RecommenderXBlock(runtime, element, init_data) {
      * @returns {dictionary} The dictionary for logging an event.
      */
     function generateLog(status, information) {
-        return _.find([
-            {'status': status, 'element': $(element).attr('data-usage-id')},
-            {'status': status, 'element': $(element).attr('data-usage-id'), 'information': information}
-        ], function(log) { return information === log.information; });
+        if (!information) {
+            return { 'status': status, 'element': $(element).attr('data-usage-id') };
+        }
+        else {
+            return {
+                'status': status,
+                'information': information,
+                'element': $(element).attr('data-usage-id')
+            }
+        }
     }
 
     /**