(tabbed) UI.
Also, fixed few bugs pointed by Dave:
* Open the URL in separate browser tab/window.
* Fixed few CSS changes for look and feel for the dialog view
* Some of the panels were not listed in the context menu for the
wcDocker.
(lazy loading) using the require.js. This allows us to load the
javascript required for any node, only when it was loaded in the browser
tree. Also, introduced the mechanism to show/edit/create of any node in
a tab panel (wcDocker.Panel).