Add object manager support to the bug class. Add menu entries for displaying the bug queue and

list of bugs and remove the existing link to admin/adminBugs.php. Remove now unused
admin/adminBugs.php. Remove now unused getNumberOfQueuedBugLinks() and getNumberOfBugLinks()
from util.php. Add object manager unit test support for the bug class.

include/maintainer.php

@@ -210,7 +210,9 @@ class maintainer
     {
         /* user id, appid, and maintain reason must be valid to continue */
         if(!$this->iUserId || !$this->iAppId || !$this->sMaintainReason)
+        {
             return NULL;
+        }
 
         $hResult = query_parameters("INSERT INTO appMaintainers (appId, versionId, ".
                                     "userId, maintainReason, superMaintainer, submitTime, queued) ".