App.create() namespace: simplify; support 'App.ns.{view/controller}' in Class names

redo eb119c0d9799060d45b424b589f6c29f74896852

examples view && controller of configs:
```
Ext.define('App.view.Chat',
[...]
    wmId: 'view.Chat',

id = 'App.controller.Chat'

Ext.define('App.um.view.Userman',{
[...]
    wmId: 'um.view.Userman',

id = 'App.um.controller.Userman'
```

that applies backend auth for namespaces:

<= Ext.Loader.syncRequire('App.um.view.Userman')
=> GET http://localhost:3007/um/view/Userman.js?_dc=1400539468445 401 (Unauthorized)
<= Ext.Loader.syncRequire('App.um.view.Controller')
=> GET http://localhost:3007/um/view/Controller.js?_dc=1400539552138 401 (Unauthorized)
um namespace: apply new scheme for Chat && Userman

as in 8dd3e6f070c7fe7302df5a320cd1a82c9768958f