Bug 913964 - Don't show 'Ignore Thread', 'Ignore Subthread', and 'Watch Thread' menu items on non-mail, special tabs like 'Troubleshooting information'. r=Standard8,a=Standard8 for landing on CLOSED TREE

mail/base/content/nsContextMenu.js

@@ -254,6 +254,8 @@ nsContextMenu.prototype = {
         "mailContext-multiForwardAsAttachment",
         "mailContext-copyMessageUrl", "mailContext-moveMenu",
         "mailContext-copyMenu", "mailContext-moveToFolderAgain",
+        "mailContext-ignoreThread", "mailContext-ignoreSubthread",
+        "mailContext-watchThread",
         "mailContext-tags", "mailContext-mark", "mailContext-saveAs",
         "mailContext-printpreview", "mailContext-print", "mailContext-delete",
         "downloadSelected", "mailContext-reportPhishingURL"