Opencast 2803 lti upload (#36)

* OPENCAST-2803 - add logging to exception when creating new event

* OPENCAST-2803 - remove log, add ".0" to presenter name

* OPENCAST-2803 - check if has property presenter

* OPENCAST-2803 - change presenter.0 to track_presenter.0

modules/lti/src/main/resources/tools/manage/js/lti.eventmanager.js

@@ -746,7 +746,7 @@ EventManager.prototype = {
             ajaxOpts.data = fd;
 
             if (isUpload) {
-              fd.append('presenter', data.presenter);
+              fd.append('track_presenter.0', data.presenter);
               ajaxOpts.xhr = this.uploadProgress.bind(this);
             }
             $.ajax(ajaxOpts)