Removed unused events: showNavigationTree,getUserAndClassInfoStarted,getUserAndClassInfoCompleted,chatRoomTextEntrySubmitted
Removed unused run modes: developerpreview,standaloneauthorpreview
Removed unused functions: displayChatRoom
Replaced annotator's own jquery-1.9.1.min.js dependency with vle/lib/jquery/js/jquery-2.1.1.min.js
Code optimizations