removes unused error messages and adds dynamic cache buster for default.js

Author: iturgeon

config/settings.php

@@ -22,8 +22,6 @@
 
 /* Messages */
 $udoit_welcome_message = 'The Universal Design Online content Inspection Tool (U<strong>DO</strong>IT) was created by the Center for Distributed Learning at the University of Central Florida. U<strong>DO</strong>IT will scan your course content, generate a report and provide instructions on how to correct accessibility issues. Funding for U<strong>DO</strong>IT was provided by a Canvas Grant awarded in 2014.';
-$error_msg_wrong_referrer = 'It looks like you tried to access UDOIT from a website other than Canvas.  Please contact support.';
-$error_msg_no_referrer = 'Your web browser did not provide a referrer.  Please contact support.';
 
 /* Resource links */
 $resource_link = [

templates/udoit.php

@@ -5,7 +5,7 @@
 		"//code.jquery.com/jquery-2.1.1.min.js",
 		"//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js",
 		"assets/js/vendor/JSColor/jscolor.js",
-		"assets/js/default.js?c=0",
+		"assets/js/default.js?cachebuster=".time(),
 	]
 ];