Merge branch 'release/1.7-RC2' into develop

WHATSNEW.md

+New stuff in 1.7-rc2
+====================
+  * Bug fixes from rc1
+  * Nested help topics support
+
 New stuff in 1.7-rc1
 ====================
   * Upgrade support for osTicket 1.6-rc1 and later

main.inc.php

@@ -62,7 +62,7 @@
     /*############## Do NOT monkey with anything else beyond this point UNLESS you really know what you are doing ##############*/
 
     #Current version && schema signature (Changes from version to version)
-    define('THIS_VERSION','1.7-RC1'); //Shown on admin panel
+    define('THIS_VERSION','1.7-RC2'); //Shown on admin panel
     define('SCHEMA_SIGNATURE','d0e37dca324648f1ce2d10528a6026d4'); //MD5 signature of the db schema. (used to trigger upgrades)
 
     #load config info

setup/setup.inc.php

@@ -15,7 +15,7 @@
 **********************************************************************/
 
 #This  version - changed on every release
-define('THIS_VERSION', '1.7-RC1');
+define('THIS_VERSION', '1.7-RC2');
 
 #inits
 error_reporting(E_ALL ^ E_NOTICE); //turn on errors??