Added missing NLS strings to sidebar and index.mst

nodes/core/core/58-debug.html

@@ -140,7 +140,7 @@
             messages.id = "debug-content";
             content.appendChild(messages);
 
-            RED.sidebar.addTab("debug",content);
+            RED.sidebar.addTab(this._("debug.sidebarTitle"),content);
 
             function getTimestamp() {
                 var d = new Date();

nodes/core/locales/en-US/messages.json

@@ -80,7 +80,8 @@
         "notification": {
             "activated": "Successfully activated: __label__",
             "deactivated": "Successfully deactivated: __label__"
-        }
+        },
+        "sidebarTitle": "debug"
     },
     "exec": {
         "spawnerr": "Spawn command must be just the command - no spaces or extra parameters",