Use existents libraries - refs #7611

main/exercice/exercise_submit.php

@@ -50,12 +50,8 @@ if ($showGlossary) {
     $htmlHeadXtra[] = api_get_js('jquery.highlight.js');
 }
 
-$htmlHeadXtra[] = '<script src="'
+$htmlHeadXtra[] = api_get_js('jquery.jsPlumb.all.js');
-    . api_get_path(WEB_PATH) . 'web/assets/jsplumb/dist/js/jquery.jsPlumb-1.7.5-min.js'
+$htmlHeadXtra[] = api_get_js('d3/jquery.xcolor.js');
-    . '"></script>';
-$htmlHeadXtra[] = '<script src="'
-    . api_get_path(WEB_PATH) . 'web/assets/xcolor/jquery.xcolor.min.js'
-    . '"></script>';
 
 //This library is necessary for the time control feature
 $htmlHeadXtra[] = api_get_css(api_get_path(WEB_LIBRARY_PATH).'javascript/epiclock/stylesheet/jquery.epiclock.css');