i.e.
'server-connect' and 'server-disconnected' events will be generated
while server gets connected and disconnected respectively.
For demo purpose - listening to the server connection from the test
script.
(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).