DevTools: Add JSDoc for static methods, fix JSDoc types and induced errors

Source/devtools/front_end/main/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 803 matching lines @@
 new WebInspector.Main();
 
 // These methods are added for backwards compatibility with Devtools CodeSchool extension.
 // DO NOT REMOVE
 
 WebInspector.__defineGetter__("inspectedPageURL", function()
 {
     return WebInspector.resourceTreeModel.inspectedPageURL();
 });
 
+/**
+ * @param {string} name
+ * @return {?WebInspector.Panel}
+ */
 WebInspector.panel = function(name)
 {
     return WebInspector.inspectorView.panel(name);
 }